Wind resistance measures each window"s ability to keep out drafts with 25 and 50 mph winds an an outdoor temperatures of 70º F. The Pella ThermaStar is part of the Replacement Windows test ...

Wind resistance measures each window"s ability to keep out drafts with 25 and 50 mph winds an an outdoor temperatures of 70º F. The Pella 250 Series is part of the Replacement Windows test ...

We featured Pella on our list of the best window replacement companies of 2024 for its wide range of styles at price points for every budget as well as its extensive selection of efficiency ...