Its sole product then: a window screen that rolled up and down like a shade. Pella windows made their debut in 1937, but the company name did not change to Pella Corp. until 1992.

MEMPHIS, TN (WMC) - Hit by a 2x4 and not even damaged. A company boasts they have perfected something called the unbreakable window screen. How well does it really hold up? We've put it to the ...