1-3/4" thick sash
Overall jamb width is 4-9/16"
3" straight legs on half-circles
Constructed of pine, with pine interior stops and wood
mull casings on mulled units
Energy efficient, insulating LoE
Glazing is sash set to the interior with beveled wood
All exterior wood parts are treated
.050" thick, 6063 extruded aluminum alloy frames are
press fit on to the wood frame exterior of all units
Accessory grooves are integral to the extruded frames
for the easy addition of accessories
Frame corners are mitered or profile cut, with internal
corner and end keys screwed into the joints and
injected with sealant
Sash exterior is covered with .062" thick, 6063
extruded aluminum alloy
70% PVDF fluoropolymer finish on frame and sash
(meets performance requirements of AAMA 2605)
Fully weatherstripped for a tight seal
Standard radius shapes include quarter-circles, half-
circles, full-circles, ovals and ellipticals
Heavy vinyl nailing fins*
Radius Standard Features
NOTES: All measurements are nominal.
*Standard only on units without brickmould.
Vinyl nailing fin
applied as standard
to units without
114 Kolbe Ultra Series
Kolbe makes radius windows in stand-alone full circles, half-circles, quarter-circles, elliptical, ovals and custom shapes.
Half-circle or elliptical windows can be stacked over other Kolbe windows and doors to create larger window walls. We
build our radius windows to order so that their profiles match those of the windows they complement.