The 12"x12"x4" Glass Block is a high-quality home window manufactured by Pittsburg Corning in the United States. This shaped window features a clear interior and exterior color, with a frame material of glass, allowing for light transmittal. With dimensions of 12 x 12 inches in height and width, and a jamb depth of 4 inches, this unit is perfect for industrial and commercial window needs. Its durable construction and unique design make it a versatile and visually appealing choice for any business or residential space.