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Kolbe One of Top 25 by

Energy-efficient Kolbe windows recognized for use in replacement projects

San Francisco, Calif. (March 2012) — Kolbe® windows & doors has been named one of the top 25 window manufacturers of energy efficient window products by the website  After reviewing window and fenestration research from a number of independent research organizations, has compiled a list of the top 25 window manufacturers who received high marks for producing energy efficient, durable and quality fenestration products, specifically windows, for U.S. homeowners.

Factors which were independently tested and reviewed in creating the list of the top energy efficient window manufacturers included thermal transmittance or 'U-factor', the solar heat gain coefficient or 'SHGC', visible transmittance or 'VT', air leakage or 'AL', and condensation resistance or 'CR'. Additional considerations included product performance over time, return on investment and demonstrated commitment to new product innovations. reviewed independent research from a number of leading non-profit research organizations specializing in efficient window performance testing and design component analysis in compiling the top 25 window manufacturers list.

To see the Top 25 List, go to is designed for U.S. homeowners interested in replacing the windows in their homes and is published by VRG, the exclusive online licensee of the 'For Dummies' brand by John Wiley & Sons Publishing, Inc. aims to provide usable, authoritative and readable content on replacement window products in the clear and direct 'For Dummies' style. VRG is independently owned and located in San Francisco, California.

Learn more about Kolbe products at

What began in 1946 as a two-brother team has grown into an internationally respected manufacturing company. Kolbe & Kolbe Millwork Co, Inc. remains a privately held, community-oriented business located in Wausau, Wis. Covering nearly one million-square-feet, its state-of-the-art facilities feature high-tech machinery and a design center to present the creative possibilities offered by Kolbe windows and doors.

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