
Pella Corporation
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The revolutionary, award-winning Pella® Impervia® product line, manufactured from Duracast® — the strongest, most durable material available in windows and doors — is now available for non-residential and multi-family projects. Pella’s exclusive five-layer Duracast fiberglass composite material offers the durability of aluminum, the energy efficiency of wood, and a price that is competitive with vinyl.
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See also: 08 1580 - Plastic Windows (Residential & Light Commercial) - primarily vinyl

Pella Corporation
![]()
The revolutionary, award-winning Pella® Impervia® product line, manufactured from Duracast® — the strongest, most durable material available in windows and doors — is now available for non-residential and multi-family projects. Pella’s exclusive five-layer Duracast fiberglass composite material offers the durability of aluminum, the energy efficiency of wood, and a price that is competitive with vinyl.