Kolbe windows & doors

Confused? Can't find what you're looking for? Learn window & door terms here – complete with easy-to-understand definitions and links to related pages. If you've checked the Glossary, the FAQs, and browsed our site, but have not found an answer to your question, please feel free to Contact Us.
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AAMA (American Architectural Manufacturers Association)
AAMA is the source of performance standards, product certification and educational programs for the fenestration industry.
AAMA website

Accent Line (also known as “V-Joint” or “Highlighted Seam”)
A joint formed by two adjacent pieces of wood in the same plane which have beveled edges.

Accessory Groove
A groove on the frame exterior of some Kolbe products; it is designed to allow easy installation of various trim and accessory options.

ADA Compliance
Often products need to be adjusted for use by the disabled. Kolbe is able to meet these needs with handicap sills, special operating hardware, and more. Discuss the project needs with your dealer.

AF Operation (also known as “Active-Fixed Operation”; opposite of FA Operation)
Two side-by-side door panels with the first (left) panel being active and the second panel being fixed (inoperable).

Air Infiltration
The amount of air that passes between a window sash and frame, measured in cubic feet per-minute per-square foot of frame area.
For more information, see our Energy & Performance page.

Aluminum Cladding
See Cladding

Anodized Finish
Metallic-look custom finish available for products with extruded aluminum sash and frames.
For more information, see our Anodized Finish page.

Argon Gas
A colorless, odorless, inert gas that fills the otherwise empty space within an insulating glass unit.
For more information, see our Glass page.

Art Glass
See Decorative Glass

Arts & Crafts Style Doors
See Craftsman Doors.

Astragal
A pair of door panels may open double-wide. The astragal is a vertical component attached to the meeting edge of the less active panel, allowing the two to lock together.

Awning Window
A window that opens at the bottom, usually with crank operation. Kolbe offers awning windows in the Heritage Series, Classic Series, Ultra Series, Inspiration Series and Resolution Series. Also, ask your dealer about pushout awning windows.
For more information, see our Awning Windows page.

Backband
Casing usually installed over exterior flat casing, near the outer edges. Backbands are available on wood trim, extruded trim, and vinyl trim.

Balances (also known as “Mechanical Balances”)
The operating mechanisms within the jambliners of double hung windows.

Bars-in-Glass
See Grilles-in-the-Airspace

Bay Window
One or more window units joined – usually at a 30°, 45° or 90° angle.
For more information, see our Bows/Bays page.

Bi-fold Doors
Bi-fold doors are comprised of panels that stack or "fold up" to each other in an accordian style. They are available as interior doors, or panoramic custom patio-style exterior doors.
Custom Folding Doors

Blind Stop
On a wood double hung window, the blind stop is the frame piece located between the jamb and the brickmould. It forms a ridge that supports either a storm sash or screen.

Bow Window
Windows joined in a smooth curve. As standard, the outer two sash operate.
For more information, see our Bows/Bays page.

Box Size
See Frame Size

Brickmould (also known as “Moulding,” “Exterior Casing” or “Trim”)
Moulding or trim applied around window or door frames on the exterior of a building to give it a finished appearance. View our brickmould options: wood trim, extruded trim, and vinyl trim.

Brochures
Online brochures are available for Homeowners and Building Professionals. Or, brochures may be ordered by mail; please Contact Us.

Bronze-Lite
Glass with a transparent, bronze tint, usually used to reduce glare. Bronze-lite is optional on most Kolbe windows, however Kolbe often recommends LoE²-240 Glare Control Glass for solar control.
For more information, see our Glass page.

Butt Hinge
A hinge with a pin inserted into a round barrel, often used on swinging doors. When butt hinges are requested on casement windows, Kolbe uses Euro hinges as standard. If desired, butt hinges must be requested specifically.

CAD Drawings
Kolbe offers links to DWG and DXF drawings from the Architect Website. Please use the Architect Website link at the top of any page.

Casement Window
A window that open from the side, usually to the exterior, with crank operation. Kolbe offers casement windows in the Heritage Series, Classic Series, Ultra Series, Inspiration Series and Resolution Series. Kolbe also offers Inswing Casements (go to our Inswing Casement page) and Pushout Casements.
For more information, see our Casement Windows page.

Casing (also known as “Trim”)
Moulding or trim applied around window or door frames on the interior of a building to give it a finished appearance. Exterior brickmould is sometimes referred to as casing.
For more information, see our Interior Trim & Accessories page.

Catalogs
Online brochures are available for Homeowners and Building Professionals. Or, brochures may be ordered by mail; please Contact Us.

Celko Option
The Celko option is available for our Heritage Series Traditional Double Hung windows, including studio and direct set transom units. It replaces the exterior wood frame components of the sill, sill nose, blind stop and brickmould with matched components constructed of cellular PVC called Celko. 3-1/2-inch flat brickmould is availble with the Celko option. The solid, extruded PVC parts match the strength of wood and provides an exterior finish that repels potential moisture and insect damage. This option is currently being refined; ask your dealer for details.

Chain & Pulley Double Hung
See Old World Classic

Check Rails (also known as “Meeting Rails” or “Lock & Keeper Rails”)
The two rails on single hung and double hung windows which meet horizontally in the center of the window unit. Locking hardware is normally installed on check rails of single hung and double hung windows.

Check Stiles (also known as “Meeting Stiles”)
The two stiles on slider windows which meet vertically in the center of the window unit. Locking hardware is normally installed on the check stiles of slider windows. The term “check rail” is often used although the meeting members are technically stiles.

Clad Profile
A wood window or door not having the brickmould or sill nosing traditional to wood windows. Clad profile units are usually finished on the exterior with K-Kron II. Because some Classic Series products aren't available, wood units may be ordered clad profile to match the aluminum clad products.

Cladding
Material that covers the exterior of a window or door frame and/or sash, offering increased durability with less maintenance than other exterior finishes. Kolbe offers aluminum clad products with a polyester finish, fluoropolymer finish, or anodized finish. Copper cladding is also available as a custom option.

Classic Series Windows & Doors
Kolbe's windows and doors that are wood to the interior and aluminum cladding to the exterior, with a polyester finish.
For more information, see our Classic Series page.

Clear Opening
When a window or door is open, the amount of space available to enter or exit. Emergency Escape & Rescue Opening (formerly known as Egress) requirements are based on clear opening dimensions. Not to be confused with Daylight Opening.

Clear Wood
A single piece of wood that is not a veneer, laminated, or several pieces of wood joined in any way. A common misconception is that “clear wood” refers to the grain pattern and/or color of wood.

Coastal Windows
See K-Force Impact Products.

CoastGard Hardware
CoastGard is a coating process offered by Truth Hardware that provides improved corrosion protection on the exterior surfaces of hardware installed in coastal areas.
Go to Truth Hardware website.

Commercial Products
Kolbe has a 'Commercial Group' to address the special needs of commercial building projects. Please discuss the project needs with your dealer.

Comparison Charts
The Kolbe website offers Quick Charts comparing glass, grille & exterior finishes available for its products.
See Quick Charts.

Copper Cladding
Copper cladding is available as a custom option.
For more information, see our Copper Cladding page.

Cottage-Style Single Hung or Double Hung
A single hung or double hung window with a bottom sash that is taller than the top sash. Many Kolbe single & double hung windows may be ordered with cottage-style sash. Ask your dealer for details.

Craftsman Doors
For more information, see our Craftsman Collection Entrance Doors page.

CSI Specifications
CSI refers to the Construction Specificiation Institute. CSI specifications provide a standardized method for manufacturers to communicate the technical details of a window or door product to architects.

Cutlite (also known as “True Divided Lite”)
Cutlites are traditional window grilles with individual glass units separated by permanent wood bars.
For more information, see our Glass page.

Daylight Opening (D.L.O.)
The visible area of glass; the amount of glass area that allows light into a room. Not to be confused with Clear Opening.

Decorative Glass (also known as “Art Glass”)
Kolbe’s term for glass that is enhanced with decorative elements, such as brass or lead caming, etched designs or glue chip.
For more information, see our Glass page.

Direct Set (alternative to Sash Set)
A window with no sash. The glass is set directly into the frame and, therefore, cannot operate.

Doors
Kolbe offers many types of doors, including:

Inswing & Outswing Entrance Doors (wood, wood/aluminum clad, fiberglass)

Craftsman Style Doors (wood only)

Sliding Patio Doors (wood, wood/aluminum clad, vinyl

Swinging Patio Doors (wood, wood/aluminum clad, vinyl)

Lift & Slide Doors (wood, wood/aluminum clad)

Interior Doors (wood, MDF)
For more information, see our Doors page.

Double Hung Window
A window with two sash that slide up and down. Kolbe offers wood Traditional double hungs with vinyl compression jambliners in the Heritage, Classic and Ultra Series. Kolbe offers wood Sterling double hungs with hidden jambliners in the Heritage and Ultra Series. And, Kolbe offers vinyl double hungs in the Inspiration, Resolution, and Windquest Series. A double hung with chain & pulley operation is also available. See Old World Classic.
For more information, see our Double Hung page.

Double Slider (also known as “Slide-By” or “Slider”)
A window with two sash that slide horizontally.
For more information, see our Slider page.

Drawings
See CAD Drawings.

Drip Cap
An accessory designed to eliminate water leaks. Wood drip caps are available for wood windows and doors. Integral vinyl drip caps are available for Heritage Series aluminum clad and clad profile products. Extruded aluminum drip caps are available for Ultra Series products. And, vinyl drip caps are available for vinyl products.

Drywall Return Receiver
A U-styled accessory that is snapped into the interior accessory groove of Kolbe vinyl windows and doors. It allows the installation of wood or drywall up to 5/8-inch thick and provides a finished receiver for extensions or plasterboard returns.
For more information, see our Vinyl Trim & Accessories page.

E-Gard®
E-Gard® is a coating developed by Truth Hardware that protects the exterior operators of casement windows from weather conditions. E-Gard® is NOT intended to handle the severe conditions associated with coastal areas.
For more information, see CoastGard Hardware.

Egress Window
See Emergency Escape & Rescue Openings

Elliptical Window
An elongated, semi-circular radius window.
See our Radius Windows page.

Emergency Escape & Rescue Openings (formerly known as Egress Openings)
A window or door large enough for a person to climb out and/or for rescue in case of emergency per local building code requirements. Please consult your dealer regarding windows that meet these requirements.
Our Size Charts note the products that meet Emergency Escape requirements.

ENERGY STAR®
ENERGY STAR® is a partnership between the U.S. Department of Energy and manufacturers of windows, doors and skylights. The purpose is to promote energy efficient products and make them easily recognizable.
For more information, see our Associations Ensure Quality page.

Euro Hinge
Euro hinges are used on segment head and half-circle top casements that operate, casements adapted for impact performance, and whenever butt hinges are requested. NOTE: Clear opening widths change when Euro hinges are used.

Extender Clip
See Jamb Extender Clip

Extension Jambs
Wood extending from a window or door frame to accommodate different wall thicknesses.

Exterior Finish
On many of our wood products, we offer primer, aluminum cladding and K-Kron II. On many of our vinyl products, we offer a polyurethane finish.

Extrusions
Vinyl material that has been moulded into a specific shape during a heating process – used here to refer to Kolbe’s vinyl, multi-chambered uPVC extrusions.
For more information, see our Vinyl Windows & Doors page.

FA Operation (also known as “Fixed-Active Operation;” opposite of AF Operation)
When there are two side-by-side door panels and the first (left) panel is stationary (inoperable) and the second is active.

Fenestration
Fenestration products are window and door products.

Fiberglass Doors
For more information, see our Fiberglass Doors page.

Film
See Glass Film.

Finger Groove (also known as “Finger Plough”)
Grooves routed into the wood rails of double hung & slider windows that are used as hand-holds for operation.

Finish
See interior finish. or exterior finish.

Fixed (also known as “Stationary”)
In the window and door industry, “fixed” refers to a window or door unit that is inoperable or stationary; i.e., it does not open.

Flanker
The outermost windows of configurations that are three-wide or more. Flankers are the windows on either side of a bay window unit or picture window, for example.

Flat Casing (also known as Casing or “Flat Brickmould”)
Casing or brickmould with a flat surface. View flat casing: wood trim or extruded trim.

Fluoropolymer Finish
The finish used on aluminum cladding in our Ultra Series of products.
For more information, see our Aluminum Cladding with Fluoropolymer Finish page.

Foundation Series Windows
Kolbe's value-based vinyl windows.
For more information, see our Foundation Series page.

Frame
The parts of windows and doors that are secured into the rough opening of a building. Frame components include the head jamb, sill, and and side jambs.

Frame Expanders
Accessories used to cover exterior or interior gaps between the frame and rough opening after a window or door is installed.

Frame Size (also known as Box Size)
Measurement of a window or door unit from outside-of-frame to outside-of-frame, excluding the exterior trim.

French Casement
Two casement windows that have a double-wide opening because there is no center mullion between them but, instead, an astragal is attached to one of the sash. Kolbe offers wood French casements in our Heritage Series, Classic Series and Ultra Series.
View a French Casement.

French Door
Two door panels that have a double-wide opening because the center mullion is replaced with an astragal attached to one of the door panels. Most Kolbe swinging doors are available as French doors.
View a French door.

Fusion Welding
The process of mitering and heating the frame and sash corners of vinyl windows. This fuses the corners together for exceptionally strong joints and permanently sealed corners. View the construction of Inspiration Series, Resolution Series or Foundation Series products.

Garden Window
Garden windows project out from the house exterior and provide a multi-dimensional view and more sunlight than other windows. Kolbe offers a specialty window called the Heritage Series Garden Window.
For more information, see our Heritage Series Garden Window page.

Garden-Aire
Kolbe’s wood sliding patio doors with a wide variety of options. Kolbe offers the Garden-Aire in the Heritage Series, Classic Series and Ultra Series.
For more information, see our Sliding Patio Doors page.

Gear Hinge (also known as “Piano Hinge”)
An anodized aluminum gear hinge extending the full height of door panel on Kolbe’s vinyl hinged patio door. It provides optimal strength to the door panel.
View the Inspiration Series Inswing Patio Door page.

Geometric Window
A window with a specific geometric shape. Common geometric shapes include octagons, triangles, diamonds, parallelograms, pentagons and trapezoids. Kolbe can make custom geometric windows; ask your supplier for details.
For more information, see our Geometric Windows page.

Glass
For more information, see our Glass page.

Glass Film
A protective film which is removed after installation and finishing. Kolbe does not offer or recommend solar films.
For more information, see our Glass Film page.

Glass Size
The measurement of actual glass, not just visible glass. Glass size includes the glass around the perimeter of a unit and is covered by glazing beads.

Glass Stop
See Glazing Bead

Glazing
Glazing refers to the glass used for windows, or when used as a verb, it refers to the act of installing glass into a window.

Glazing Bead (also known as “Glass Stop”)
A long, thin moulded piece of wood used to secure glass into a window. Kolbe's glazing beads are beveled as standard, with an ovolo profile being optional on most wood products.
View beveled (1) and ovolo (2) glazing bead profiles.

Gray-Lite
Glass with a transparent, gray tint. Gray-lite is optional on most Kolbe windows and doors.

Green Building
The 'Green Movement' brings up many concerns about energy efficiency, as well as company philosophy and practices. We have several areas where you may learn more about Kolbe's 'Green Initiatives', as well as the energy & performance of Kolbe products.
Green Initiatives

Grid
See Grille.

Grille Bar
See Muntin Bar

Grille
A grid that visually divides a window into panes. At Kolbe, the word "grille" normally refers to an interior removable wood grille.
For more information, see our Grilles page.

Grilles-in-the-Airspace (also known as “GIA” or “Bars-in-Glass”)
Permanent grilles within an insulating glass unit.
For more information, see our Grilles page.

Guide Bar
See Operator

Half-Circle Top (also known as “Round Top” or “Arched Window”)
Windows that are curved on top. Kolbe classifies half-circle top windows with the basic window style. A half-circle top double hung would be classified with double hungs, for example, rather than with radius windows.

Head Board
The board applied to the top of a bow or bay window.

Head Jamb
The top, horizontal piece of a door or window frame.

Heritage Series
Kolbe's wood windows and doors that are wood to the interior and the exterior.
For more information, see our Heritage Series page.

High Performance Option
Many Kolbe products may be adapted to improve their air, water and structural ratings. Added sash locks, higher extension jambs or longer screws may be necessary to improve design pressure ratings, however adaptations vary from product to product. Ask your dealer for details.

Hinging
Hinge placement or operation on a window or door. Kolbe windows and sliding patio doors are always viewed from the exterior to specify hinging. Swinging doors are specified by the swing; i.e. outswing door hinging is described as viewed from the exterior and inswing door hinging is described as viewed from the interior.

Hopper Window
A window that is hinged at the bottom and tilts in from the top for ventilation. Hopper windows are often used in basement or garage applications. The Magnum Tilt-Turn has optional hopper-style operation.
See Magnum Tilt-Turn

Hurricane Windows
See K-Force Impact Products.

Impact Glass
Glass that has been prepared and tested for impact performance, especially in coastal areas where hurricanes may be a threat. Impact glass is used in K-Force impact products.
For more information, see our Glass page.

Impact Performance Option
Many Kolbe products may be adapted for improved impact performance. These are K-Force® impact products. When the K-Force upgrade is requested, high performance adaptations are made and impact glass is used.
For more information, see our K-Force page

Impact Products
See Impact Performance.

Inspiration Series Windows & Doors
Kolbe's vinyl windows and doors for new construction.
For more information, see our Inspiration Series page.

Insulating Glass (also known as "IG")
Glass units constructed of two or more glass panes separated by a hermetically sealed space.
For more information, see our Glass page.

Inswing Casement Window
A window that swings open from the side to the interior of the room. Kolbe offers wood inswing casements and inswing French casements.
For more information, see our Inswing Casement page.

Interior Doors
Usually wood or MDF doors that are 3/8" thick and installed on the interior of a building. Kolbe offers:

Kolbe Advantage Select Raised Panel Doors

Kolbe Advantage Select Flat Panel Doors

Kolbe Advantage Select French Doors (with glass lites)

Kolbe Advantage Rustic Wood Doors

Kolbe Advantage Basic Raised Panel Doors

Kolbe Advantage Decorator Doors

Kolbe Advantage Flush Doors
Bi-folds are available to match many of the interior doors above. Plus, some of the above doors may be modified for pocket installation.
For more information, see our Kolbe Advantage Doors page

Interior Finish
See interior finish options for wood products, as well as Inspiration and Resolution Series vinyl products. Interior finish options may vary for fiberglass doors and interior doors.

J Channel
An accessory for Kolbe vinyl windows and doors that snaps into the exterior accessory groove. It is designed to provide a matching channel for the installation of siding.
For more information, see our Vinyl Trim & Accessories page.

Jamb
The top and side components of a window or door frame.

Jamb Extender Clip
An accessory for Kolbe vinyl windows that is used to install extenders to the windows. The clip is snapped into the interior accessory groove, then stapled or screwed to the extender.
For more information, see our Vinyl Trim & Accessories page.

Jambliner
The vertical, side components of double hung windows that hold the sash in the frame and incorporate mechanical balances for operation.

K-Force Impact Products
K-Force Impact Products are Kolbe windows and doors that have been adapted for improved impact performance. When the K-Force upgrade is requested, high performance adaptations are made and impact glass is used.
For more information, see our K-Force page

Kickplate
A thin, polished metal plate applied to the bottom rail of a door to prevent damage to the surface. Kolbe does not offer kickplates; they must be purchased separately and applied on the jobsite.

K-Kron II
K-Kron II is Kolbe’s specially-formulated, optional exterior finish for Heritage Series wood windows and doors. While not as low maintenance as aluminum cladding or vinyl, it offers many color options and maintains the traditional beauty of wood windows and doors.
For more information, see our K-Kron II page

KPII
KPII is a controlled-spray application that seals wood surfaces and provides a bond for the topcoat finish. This high performance primer is used in the K-Kron II finishing system and is optional on most Kolbe wood windows and doors.
For more information, see our Primer page.

Laminated Glass
Two or more layers of glass bonded together using heat and pressure, with inner layers of transparent plastic. Laminated glass offers one of the best levels of ultraviolet ray blockage over the entire ultraviolet spectrum.
For more information, see our Glass page.

Laminated Veneer Lumber (also known as “LVL”)
Layers of lumber with the grain directions opposite each other and laminated together with adhesive. This provides additional strength and makes the lumber less prone to warping than clear wood.

Leaded Glass
True leaded glass is comprised of small, usually irregular panes of glass which may be multi-colored and joined by lead or zinc. However, popular usage of the term often refers to decorative glass with lead caming. Like most window manufacturers, Kolbe does not offer true leaded glass, but does offer lead caming and decorative glass.

Lite
Refers to a single pane of glass or, in some cases, an entire glass unit. (Ex: Cutlite refers either to individual panes of glass, or to individual insulating glass units. One “lite” of a bow unit refers to one sash of the multi-sash unit.)

LoE Coating
See Low Emissivity Coating

LoE Glass
See Low Emissivity Coating

LoE²-240 Glare Control Glass
LoE²-240 Glare Control is glass that is tinted grayish-blue for maximum solar control, while maintaining the same visible light reflectance as uncoated glass. It is less expensive than bronze- or gray-lite, yet achieves solar control over a wider range of the ultraviolet spectrum than other types of glass.
For more information, see our Glass page.

Low Emissivity Coating (also known as “LoE” or “LoE²”)
LoE coatings reduce energy transfer through insulating glass units, and thereby achieves one of the highest levels of energy performance possible for glass. On most Kolbe windows, LoE²-270 coating is applied to the inner surface of insulating glass units
For more information, see our Glass page.

LVL
See Laminated Veneer Lumber

Magnum Double Hung
Kolbe’s Magnum double hung window is designed for light commercial projects.
For more information, see our Magnum Double Hung page.

Magnum Series
Kolbe’s Magnum Series windows are designed for light commercial projects. Ask your dealer for details.

Magnum Tilt-Turn
Kolbe’s Magnum Tilt-Turn window is a European-style window. The sash may tilt in like a hopper window or swing from the side like an inswing casement.
For more information, see our Magnum Tilt-Turn page.

Margin (also known as “Reveal”)
The space between a door panel or window sash and the adjacent frame.

Marginal Grilles (also known as “Queen Anne,” “Prairie-Style” or “9-Lite” Grilles)
Marginal grilles are a grille pattern with a small square in each corner of a window unit; the standard corner square has a 4-inch x 4-inch daylight opening.
View marginal grille pattern.

Masonry Opening
The wall opening in a brick, block or stone building where a window or door is installed. Several types of installation techniques are possible in such a situation, so Kolbe does not use masonry opening measurements for ordering purposes.

Mechanical Balances
See Balances

Meeting Rails
See Check Rails

Meeting Stiles
See Check Stiles

Modified Performance Option
Many Kolbe products may be adapted to improve their structural and/or air and water performance with minimal adaptations to the sash, frame and/or hardware. Adaptations vary from product to product. Ask your dealer for details.

Moulding
See Brickmould

Mull Casing
Mull casings cover the joints between windows and/or doors that are mulled side-by-side and/or stacked.

Mull Cover
Mull covers are accessories for Kolbe vinyl windows and doors that allow modular sizing of multiple opening widths and provides space for structural stiffeners, if required.
For more information, see our Vinyl Trim & Accessories page.

Mulled
Mulled windows or doors are joined together. Many Kolbe windows and doors may be mulled at the factory before shipping.

Mullion
The stationary frame piece that separates mulled window or door units. Being joined by mullions makes multiple window or door units appear to be one. Not to be confused with Muntin Bar.

Multi-Point Locking System
A locking system with several points where locking occurs, such as on Kolbe’s casement windows and hinged patio doors. This system provides optimal security.

Muntin Bar (also known as “Grille Bar”)
A short, light-weight bar that visually divides a window into “separate” panes. Not to be confused with mullion.

Nailing Fin
A strip of material, usually vinyl, around a window or door frame that makes installation easier. Kolbe applies vinyl nailing fins to most aluminum clad and clad profile units as standard.

NFRC (National Fenestration Rating Council)
The NFRC was established in 1989 to implement a national energy rating system for windows, doors and other fenestration products and was sanctioned by the federal government under the Energy Policy Act of 1992. The NFRC energy rating system is based on whole product performance, so consumers can directly compare products with different construction attributes
For more information, see our Energy & Performance page.

Nominal
A nominal measurement is an approximate measurement; the actual measurement may vary slightly.

NWWDA (National Wood Window & Door Association)
See WDMA

O.S.M.
“Outside Measurement” or “Overall Measurement”

Obscure Glass (also known as “Pattern Glass”)
Glass with a rough surface so that while it remains translucent, it offers the privacy of an obscured view. The rough surface is on the interior of the insulating unit for easy cleaning. Kolbe offers several obscure glass patterns.
For more information, see our Glass page.

Octagon Window
A geometric window with eight sides. Kolbe offers octagon windows in several of its product series.
For more information, see our Geometric Windows page.

Ogee Direct Set Windows
A specialty window offered by Kolbe.
For more information, see our Ogee Direct Set page.

Ogee Lugs
Historically, ogee lugs were part of double hung sash stiles for stability. They limited operation, so glass wouldn't shatter if lowered too quickly. And, it was thought that they strengthened the check rail. Ogee lugs may be purchased and added on to double hung windows.
For more information, see our Old World Classic Double Hung page.

Old World Classic
Kolbe’s double hung window with details similar to historic double hungs. The Old World Classic operates effortlessly due to its chain & pulley mechanism.
For more information, see our Old World Classic Double Hung page.

One-Lite
Usually refers to a single insulating glass unit.

Operable (also known as “Venting”)
A window that can be opened and closed.

Operating Panel
A door panel that can be opened and closed.

Operator (also known as “Guide Bar”)
A jointed, metal arm that opens and closes a casement or awning window.

Ovolo
A glazing bead or removable grille that curves outward from the glass and is a decorative alternative to the standard beveled profile.
For more information, see our Grilles page.

Palladian Window
A Palladian window is a window grouping that is divided into three parts. The center section is larger than the two side sections, and usually includes an arched window. Kolbe can recreate this style using a double hungs on each side and a large half-circle top window in the center.

Panel
At Kolbe, we refer to panels as the raised panels on a door. Panels may also refer to the door 'sash' – the part that can be opened and closed.

Parallelogram Window
A geometric window with four sides and angled corners. Each side is parallel to the opposite side. Parallelogram windows may be ordered as custom units. Ask your dealer for details.

Patio Doors
Kolbe offers Sliding Patio Doors and Swinging Patio Doors.

Patterned Glass (also known as Pattern Glass or Obscure Glass)
Patterned glass is an option which allows sunlight into a room without compromising privacy.
For more information, see our Glass page.

PDL
See Performance Divided Lites

Pentagon Window
A geometric window with five sides. Pentagon windows may be ordered as custom units. Ask your dealer for details.

Performance Divided Lites Lites (also known as PDL, Simulite, simulated divided lites, or SDL)
Kolbe’s method of providing the look of Cutlite (true divided lites), while offering the energy efficiency of one lite of glass with bars adhered on the interior, exterior and usually within the insulating glass unit. The bars within the insulating glass units are a champagne finish.
For more information, see our Grilles page.

Picture Slider
See Triple Slider

Picture Window
Usually a configuration of casement windows with one or more inoperable center sash and operable windows on either side.
For more information, see our Picture Window page.

Polyester Finish
The finish used on roll-formed aluminum cladding in the Classic Series.
For more information, see our Aluminum Cladding with Polyester Finish page.

Polyurethane Finish
An exterior finish offered on many of our vinyl window products.
For more information, see our uPVC with Polyurethane Finish page.

Prairie-Style Grilles
See Marginal Grilles

Product Literature
Online brochures are available for Homeowners and Building Professionals. Or, brochures may be ordered by mail; please Contact Us.

Pushout Windows
Kolbe offers casement and awning windows with pushout operation in the Heritage and Ultra Series.
For more information, see our Casement Window page.

Queen Anne Style
See Marginal Grilles

R-Value
Resistance to heat flow. A high R-value indicates that a window has good heat-insulating properties.
For more information, see U-Factor.

Radius Window
A window with curves. As stand-alone units, they are often fixed (stationary) full-circle, half-circle, quarter-circle or elliptical windows. Operable windows, such as casements and double hungs, are also available with "radius tops." These windows may or may not operate, with the top being a half-circle or segment head (arch top). Kolbe groups these products with the windows that they match (ex: double hungs or casements)
For more information, see our Radius Windows page.

Rails
The top and bottom horizontal pieces of a door panel or window sash.

Raised Panels
Panels that are surrounded by the stiles and rails of a door panel and are “raised.” Raised panels are common decorative accents on doors.

Replacement Sash Kit
A kit that allows existing double hung window sash to be replaced with Kolbe double hung window sash, complete with spring-loaded counterbalances and easy-sliding jambliners. The replacement sash offer energy efficiency along with a convenient tilt-in feature that makes cleaning easier.
For more information, see our Double Hung Replacement Sash Kits brochure.

Resolution Series Windows & Doors
Kolbe's vinyl windows and doors designed for replacement or renovation.
For more information, see our Resolution Series page.

Reverse Cottage-Style Single or Double Hung
A double hung window with a top sash that is taller than the bottom sash. Many Kolbe single & double hung windows may be ordered with reverse cottage-style sash. Ask your dealer for details.

Roller Adjuster
Hardware on the bottom and top rails of sliding patio doors that allows the door panel to be adjusted slightly up or down for ease of movement. (NOTE: The roller adjuster cover must be removed before adjustment.)

Roll-Formed Aluminum
Aluminum cladding that is applied to the exterior of the door or window frame and/or sash by snapping it around the wood. It fits closely to the wood, thereby maintaining the beautiful profile of wood windows/doors.
For more information, see our Aluminum Cladding with Polyester Finish page.

Rough Opening (R.O.)
The wall opening where a window or door is installed. Usually a half-inch is added to the frame (box) size which equals the rough opening. This is allowed for insulating and squaring the unit. One inch is recommended when installing Kolbe wood units with installation clips.
For more information, review our Rough Opening Manual for Heritage & Ultra Series products.

Royal Sliders
As of 07/02/07, Royal Sliders are no longer available to order.

Sash
The part of a window that holds the glass can be opened and closed in an operating window. Fixed windows may also have sash – the glass is set into the sash, then the sash set into the frame. (NOTE: Kolbe uses the term “sash” as both singular and plural.)

Sash Set (alternative to Direct Set)
A window with the glass set into a sash, then the sash set into a frame. Most Kolbe windows are sash set as standard.

SDL
See Performance Divided Lites

Seat Board
A board applied to the bottom of a bow or bay window, providing support as well as a flat, finished surface.

Secondary Security Lock
An optional lock for sliding patio doors that locks the door panel to the sill in a partially open or closed position, allowing ventilation without sacrificing security.

Segment Head (also known as “Eyebrow Window” or “Arched Window”)
A window or door panel with an arc at the top, where the arc is less than a true half-circle. Windows that incorporate a curve, or radius, at the top. Kolbe classifies segment-head windows with the basic window style. A segment-head double hung would be classified with double hungs, for example, rather than with radius windows. Ask your dealer for details.

Side Jambs
The vertical pieces of a window or door frame.

Sidelite (also known as “Sidelight”)
A wood or glass panel installed next to a door frame.

Sill Horn
The portion of sill nosing that extends past the side jambs.

Sill Nosing (also known as “Sill Nose Trim”)
A piece of moulding applied to a window sill exterior that acts as a drip edge.

Sill
The bottom, horizontal piece of a window frame or the bottom threshold of a door frame. Not to be confused with stool.

Simulated Divided Lites
See Performance Divided Lites

Simulite
See Performance Divided Lites

Single Glazing
A single panel of glass with no insulating airspace. Single glazing is optional on most Kolbe windows and doors.
For more information, see our Glass page.

Single Hung Window
A window which looks like a double hung, but the top sash is stationary. The bottom sash slides up and down. Most Kolbe double hung windows may be ordered as single hung units.
For more information, see our Double Hung / Single Hung window page.

Sizes
Rough opening sizes may be found in our Size Charts.

Slider (also known as “Slide-By”)
A window that slides horizontally. Kolbe offers sliders in many of its product lines.
For more information, see our Sliders page.

Sliding Patio Door
Kolbe offers several sliding patio doors:

Heritage Series Garden-Aire (wood)

Ultra Series Garden-Aire (wood/aluminum clad)

Inspiration Series sliding patio doors (vinyl)

Resolution Series sliding patio doors (vinyl replacement)

Classic Series Garden-Aire (wood/roll-formed alum clad)
For more information, see our Sliding Patio Doors page.

Solar Film
Kolbe does not offer or recommend solar films.

Solar Heat Gain Coefficient (SHGC)
Solar Heat Gain Coefficient refers to the measurement of solar energy transfer through the glass, rather than the entire unit. Lower SHGC means less solar heat transmittance into a room, which will reduce cooling costs.

Spacer Bar
The bars that form the perimeter of insulating glass units, as well as PDL bars within the insulating glass units. Perimeter spacer bars are a “mill-finish” silver-gray color as standard. PDL spacer bars are a champagne finish.
For more information, see our Glass page.

Specifications
Specifications are the technical details of a window or door product.
See CSI Specifications

Square-Out, Segment-In
A window or door sash/panel that is square on top, with a glass panel that is curved on top. Square-Out, Segment-In windows and doors may be custom-ordered from Kolbe Windows & Doors. Ask your dealer for details.

Stacked
Windows that are mulled vertically, one above the other.

Stain
See Interior Finish

Stainless Steel Hinges
Hinges that are corrosion resistant; stainless steel hinges are recommended for seacoast applications.

Stationary (also known as Fixed)
“Fixed” windows or doors that do not open.

Steel Doors
Kolbe offers a few fire-rated steel doors. Ask your dealer for details.

Sterling Double Hung Window
These are Kolbe's double hungs with concealed jambliners. Sterling Double Hungs are available in all-wood in the Heritage Series or with wood interior and aluminum clad exterior in the Ultra Series.

Sticking
In the window and door industry, “sticking” refers to the raised, profiled portion of stiles and rails which create the glass shelf on a window or door.

Stiles
The vertical pieces of a window or door sash panel.

Stool
Often called a window sill, the stool is a piece of wood that protrudes from the bottom of a window. Stools are commonly seen in 19th century homes; plants or knick-knacks are often placed on window stools.

Storm Region Windows
See K-Force Impact Products.

Strike Plate
The piece of locking hardware on a door frame which receives the latch or dead bolt.

Studio Windows
Fixed (stationary) windows usually profiled to match double hungs.

Surround
The wood frame around the perimeter of Kolbe’s removable grilles, providing stability, ease of removal and a finished appearance.
For more information, see our Grilles page.

Swinging Doors
Kolbe offers Swinging Patio Doors. and Swinging Entrance Doors.

Swinging Windows
Kolbe offers casement windows, which swing to open on the side, and awning windows which swing to open on the bottom. See Specialty Windows as well.

Tempered Glass
Plate glass with increased strength.
For more information, see our Glass page.

Template
A pattern used to provide window dimensions for radius top, geometric or special units.

Thermo-Edge Spacer (also known as “Warm-Edge Spacer”)
Designed specifically for Kolbe windows, stainless steel spacer bars provide an increased edge temperature on insulating glass units, reducing the potential for condensation on the glass. Thermo-edge spacer bars are a “mill-finish” silver-gray color.
For more information, see our Glass page.

Thermoplastic
Plastic that becomes soft and moldable during a heating process

Threshold
The bottom of a door frame that is beveled on each side. Thresholds are classified as either “interior” or “exterior.”

Tilt Latch
Hardware on some double hung windows that allows the sash to be tilted in or removed for cleaning.

Tilt-Turn Window
See Magnum Tilt-Turn

Traditional Double Hung
Kolbe's double hung window with 9/16-inch insulating glass. Compression jambliners allow the sash to be tilted in or removed for cleaning. Kolbe offers Traditional Double Hungs in the Heritage Series, Classic Series and Ultra Series.
For more, see our Double Hung page.

Transom
A stationary window unit that is stacked (or mulled) immediately above a door or window. Kolbe classifies transom windows with the basic window style that it complements. A transom above a double hung would be classified with double hungs, for example.

Trapezoid Window
A geometric window with four sides and angled corners. Usually, the top and bottom are straight and parallel, with the bottom longer than the top. The sides are the same length, but are positioned at opposite angles. Trapezoid windows may be available as custom units. Ask your dealer for details.

Trim
For interior trim, see Casing. For exterior trim, see Brickmould.

Triple Slider (also known as “Picture Slider”)
A sliding window with three sash. The center sash is usually a large, inoperable sash, sometimes referred to as a “picture” unit. Kolbe offers triple sliders in several of its product lines.
For more information, see our Slider page.

True Divided Lite
See Cutlite

Turn-Tilt Window
See Magnum Tilt-Turn

U-Factor (formerly known as “U-Value”)
U-value measures heat flow through a window or door. Low U­-factor means better insulating properties and better energy efficiency, especially in winter. U-factor is the inverse of R-value. (U=1/R).
For more information, see our Energy & Performance page.

Ultra Series Windows & Doors
Kolbe's windows and doors that are wood to the interior and aluminum cladding to the exterior, with a fluoropolymer finish.
For more information, see our Ultra Series page.

Uniform Sight Lines (Sash Set vs. Direct Set)
Fixed windows are often stacked above operating units. Some manufacturers install glass directly into the frames of fixed windows. At Kolbe, however, we install the glass into a sash, which is then installed in the frame. This creates a "uniform sight line" from the operating unit below to the inoperable window above. This is considered "architecturally correct."

Unit Dimension
On clad and clad profile windows and doors, the unit dimension is equal to the Box Size (i.e., frame size). On wood windows and doors that are not clad or clad profile, unit dimension is measured from the outermost edges of the brickmould.

Universal Design
Often products need to be adjusted for use by the disabled or elderly. Kolbe is able to meet these needs with handicap sills, special operating hardware, and more. Discuss the project needs with your dealer.

uPVC
uPVC refers to the chemical composition of the vinyl used in Kolbe vinyl windows and doors. Poly Vinyl Chloride is unique among plastics because it is comprised of approximately 60% chloride stemming from rock salt (sodium chloride) and 40% polymers stemming from natural gas and petrochemicals.

Utility Window
A window designed for function, not aesthetics. Utility units are usually used for garages and basements. Kolbe will make utility units as custom units. Ask your dealer for details.

U-Value
See U-Factor

Veneer
A thin sheath of wood usually applied over a stronger type of wood, creating a beautiful finish.

Vents
A window that “vents” or is “venting” is able to open and close; it is “operable.”

V-Grooved Glass
A type of decorative glass with grooves for decoration.
For more information, see our Glass page.

Vinyl Windows & Doors
For more information, see our Vinyl Windows page.

V-Joint
See Accent Line

Warm-Edge Spacer
See Thermo-Edge Spacer

WDMA (Window & Door Manufacturers’ Association)
A nationwide association that sets standards and guidelines for the window and door industry. (Formerly known as the NWWDA.)
For more information, see our Energy & Performance page.

Weatherstripping
A material that creates a weather-tight seal between a window or door sash and the frame.

Weight & Pulley Double Hung
See Old World Classic Double Hung

Window Symbols
See CAD Drawings

Windows
Kolbe offers many types of windows, including casements, awnings, double and single hungs, sliders, radius and geometrics and more.
For more information, see our Windows page.

Windquest™ Series Windows & Doors
Kolbe's vinyl windows and doors that offer high design pressure ratings often needed for commericial projects, as well as impact rated products for coastal areas.
For more information, see our Windquest Series page.

Wood Units
"Wood units" is a slang term used in Kolbe publications to mean wood windows or doors that are not finished with aluminum cladding on the exterior. "Wood units" are available in the Heritage Series.
For more information, see our Heritage Series page.

Wood Windows & Doors
Kolbe offers windows & doors that are wood to the interior and the exterior in the Heritage Series. Kolbe offers windows & doors with wood on the interior and aluminum cladding on the exterior with a polyester finish in the Classic Series. Kolbe offers windows & doors that are wood to the interior and aluminum cladding to the exterior with a fluoropolymer finish in the Ultra Series. Plus, Kolbe offers wood entrance doors and interior doors.