8X Stronger Than Vinyl

Learn more about Custom Stained Ultrex Windows

Online Reviews

Click Here to see customer reviews

Three Manufacturers

Learn more about our large selection of products.

Ultrex – The superior window material

Ultrex – The superior window material

Marvin Ultrex® Fiberglass Windows Infinity® Replacement windows and doors are constructed with Ultrex Fiberglass. This pultruded fiberglass is superior to other window materials due to its unmatched strength and durability. Ultrex fiberglass makes infinity windows...