Kolbe & Kolbe. Exceeding 2010 Energy Star criteria for all U.S. climate zones, Windquest Series Energy Performance windows feature a 11/4-inch triple glazing system that offers U-factors of as low as 0.18 and solar heat gain coefficients of 0.23, qualifying the windows for federal tax credits. A full range of design options is available, including divided lites. 800.955.8177. www.kolbe-kolbe.com.
