The MONT Automatic Roof Vent is designed for simple and easy installation on existing MONT Greenhouses. The Automatic Roof Vent is made from the same high-quality aluminum, polycarbonate, and includes the same professional grade automatic vent opener as the MONT Greenhouse comes standard with. FEATURES Fits ALL MONT Greenhouses Automatic roof vent opener Quick and easy installation Will work with the MONT Interior Shade Cloth System Assembly Required: Y Product Length (IN): 48Product Height (IN): 2Product Width (IN): 24Product Weight (LB): 10 Warranty: 10yr Warranty Country of Origin: USA