The ShelterLogic Ultra Max canopy enclosure kit adds a solid rear panel, 2 side walls and double-zippered front door to totally enclose your Ultra Max canopy. Made of 7.5-oz. per sq. meter pm² 3-layer ripstop polyethylene fabric. Waterproof and UV-treated. Includes bungee cords. Fastener Type Bungee, Fastening Hardware Included Yes, Fits Canopy L x W ft. 50 x 24, Material Thickness oz. per sq. ft. 7.5, Color White, Zippered Door Yes, Material Type Polyethylene fabric, Windows No.. Model Number: 27277. UPC: 677599272776.