The only regular production Quad Pane window system produced in North America is offered to you in our 4000 SERIES Casement, Awning and Fixed Window. These windows will give you the highest insulative and structural rating in the industry, not to mention the reduction in sound transmittance and overall comfort. This remarkable performance is the result of constant attention to the smallest detail.
These superior quality windows exceed the highest industry standards. Greater comfort, lower energy costs, extraordinary resistance, and a beautifully finished look bring your home the best added value possible.