Energy-performance windows

Windquest series energy-performance windows have a 1 1/4-inch, triple-glazing system. Available as casement, awning, and studio styles, the low-maintenance windows have U-values of 0.18/0.19 and R-values of more than 5. Solar-heat-gain coefficient is 0.23. A variety of options include divided lites.
Kolbe Windows & Doors, Wausau, WI
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