Heat Resister
Fitted with R-6 to R-16 rated glass, these aluminum-clad windows have Western pine sashes and frames. They feature 99.5 percent UV blockage, resist condensation to sub-zero temperatures, have a 20-year warranty, and come in standard and custom sizes. Alpen. 800.882.4466. www.alpeninc.com.
Alpen Aluminum-Clad Windows
