Quality Glass Block and Window Co. is one of the largest distributors of Seves Glass Block in the Midwest. We manufacture fresh air ventilators for worldwide distribution and are the manufacturers of the RS2000 removable sash window and the QM1000 vinyl wrapped glass block window. On top of our Glass Block Products, we're now offering the following: New Construction and Replacement Windows, Exterior Doors, Storm Doors, Shutters, Skylights, and DuPont materials. In addition, we offer Installation Services for Storefronts, Glass Shower Doors and Mirrors. Our product line includes brand names such as Andersen, SilverLine, Quaker, Velux, and Therma-Tru.