Pella Impervia Windows
The Pella Impervia is their fiberglass window that tends to receive pretty poor reviews from contractors and installers in terms of overall looks and construction. They also feel the overall performance, including a.33 U-Value, for the double pane double hung leaves something to be desired. On the plus side, they like the large numbers of color options available, as well as the nice sleek frame. Many contractors would suggest doing a touch/feel comparison with the Marvin Infinity before purchasing the Impervia so you can compare two of the top selling fiberglass windows on the market. Comparable to the Infinity or Integrity from Marvin Windows And Doors.
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