This article first appeared in the 200907
issue of BD+C.
Pella's Impervia line now includes casement and awning windows. Impervia windows are made from Duracast, which is a highly stable fiberglass composite that won't warp, expand, sag, shrink, or turn brittle, and resists dents, scratches, and damaging UV rays. The windows come factory finished in brown, white, and tan. Most Impervia products with low-e insulating glass meet or exceed Energy Star guidelines; glass options include clear insulating glass, low-e insulating glass with argon, obscure privacy glass, and tempered glass. Installation options include flush flange, nailing fin, block frame, and accessory groove.
Pella
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