ShelterLogic MaxAP 3-in-1 Canopy with Enclosure and Extension Kits, White, 10 x 20 ft. Polyethylene Imported Easy-to-install swedged frame constructed of heavy duty 1-3/8 in. diameter steel Premium powder coat finish protects frame from corrosion and rust Ripstop, UV treated polyethylene fabric cover is 100% waterproof and heat welded, not sewn Patented Twist-Tite tensioning squares up the frame and tightens down cover Includes complete canopy plus enclosure, expansion panels, and extension poles