Cycle testing - we operate each product thousands of times to simulate prolonged performance of key components like locks, screens and shades ... between-the- glass blinds and shades, and pivoting ...

Pella is a nationwide window manufacturer and installer. It has more than 200 showrooms in North America, with online and in-home ordering options. In-home consultations are free and offer a no ...

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 ...