Today we take a look at two composite materials from two of the biggest and best in the window market as we pit Pella Impervia fiberglass against Andersen’s Fibrex composite in a test of strength and impact resistance. Who comes out on top? Watch and find out. For more detailed information visit www.loweryz.com or call at (928) 468-0591 or visit our showroom at 107 W Wade Ln Suite 3, Payson, AZ 85541