Our beautiful Vinyl Windows are made from the newest, most durable, heavy walled vinyl extrusions. They are structurally designed with multiple irregular chambers to be the strongest, most energy efficient, and maintenance free, vinyl frames available anywhere today. Our vinyl is specially formulated to withstand extreme sun exposure. We back them with a limited lifetime warranty. The Energy Guard system incorporates a beautifully beveled exterior glazing leg to simulate the historic putty glazed appearance.