Impervia Series, Fiberglass Single-Hung Window
Pella Impervia single-hung windows, made from our proprietary fiberglass material, are designed and tested for a lifetime of everyday use. Featuring a stationary top sash and a bottom sash that opens and closes for ventilation, they are a great option for rooms that require access to fresh air. Versatile design features and options help deliver a timeless style to any home. Equal sightlines provide a clean, consistent aesthetic.
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