This is a Premier brand Bus Window that is top-mounted and bonded. It measures 41" x 36" outside dimensions and features radius, tempered dark smoke glass, and both emergency and non-emergency functionality (Handles sold separately). The frameless design adds a sleek and seemless look to the rear placement on the bus. It weighs 35 lbs and is suitable for buses in need of a durable and stylish window replacement solution.  OEM Part No. 5-BG-10A Replacement Bus Window used on Ventura Coach and a Variety of other Bus Brands.