Overhead Door aluminum sectional doors provide an excellent solution for commercial applications, such as service stations, fire stations or retail applications where visual access and light transmission are key considerations. Glazing is available in 1⁄8″ DS Glass, ¼″ polycarbonate and ½″ insulated glass. This product offering includes two rail/glazing designs from which to choose with attractive powder coating options. Maximum widths are 26′2″, heights 21′1″.