The product is a retired 9x9x3 Pittsburgh Corning Architectural Glass Block DECORA, designed for use as a fixed window in any room. The glass block has a clear interior color and exterior color, with various features such as being severe weather ready and having a solar heat gain coefficient. It has a U-factor and grid style, as well as comes with a balance system and lock type. The glass block is made of structural glass and weighs 5 lbs, manufactured in the United States by Pittsburgh Corning.