Your plants and flowers will flourish inside the 1-3/8" Frame 10' x 20' Grow It Greenhouse. Generously sized, Canopies and Tarps greenhouse is made with a sturdy 1-3/8" diameter all-steel round frame design with base rail structure for a sturdy foundation. Even on the sunniest days, the polyethylene fabric cover blocks damaging UVA and UVB rays. On hot days, you can roll up the side vents for improved air flow and temperature control. Double zippered front and rear doors have screened vents for better air circulation. Structurally sound, the Grow It Greenhouse features the patent pending Sherlterlogic 3X steel stabilizers for superb reinforcement. Easy Slide CrossRail system tightly anchors the cover to the frame. The Grow It Greenhouse has been finished with DuPont Premium powder-coat to help resist peeling, corrosion, rust and chipping. For your convenience, temporary augor anchors, hardware kit and step-by-step instructions are included for quick and easy assembly.