|Features: DuPont powder-coated 1-3/8 in. steel frame. The Clear View translucent, rip stop cover is waterproof and UV-treated, providing enhanced illumination, for plant growth and protection. 1 3/8 in. high grade steel frame with DuPont premium powder coat finish resists chipping, peeling, rust and corrosion. Easy Slide Cross Rail system and Ratchet Tite tensioning for solid cover anchoring to the frame. Easy Flow side panels and zippered half-moon end-panel vents provide airflow.