Quality Glass Block and Window Company provides customers with preassembled panels crafted from Pittsburgh Corning Glass Block. We offer customers the choice of standard or custom sizes, both with and without ventilation. We offer Four unique patterns that provide varying degrees of light transmission and privacy: DELPHI® Pattern, ICECAPES® Pattern, DECORA® Pattern and Wavy Mist® Pattern. Windows from Quality Glass Block effectively eliminate the need for storm windows and reduce the amount of energy required for heating and cooling. When building with glass blocks, you do not require the additional caulking, puttying and painting that typically accompany weatherizing window fixtures. Glass blocks don"t rust, they don"t rot and the frame doesn"t peel. Cleaning is as simple as hosing the outside and wiping the inside with a damp cloth.