Increase the versatility of your 10-ft. x 20-ft. canopy with the Shelter Logic Max AP Canopy Accessories. Polyethylene fabric construction is 100% waterproof and UV-treated to withstand the elements. UPF rating of 50 protects against the suns harmful rays. Imported. Available: Replacement Cover Replace the old or worn cover on your canopy. Twist Tite tensioning tightens down the cover. Includes fitted cover. Sidewall Extension Kit Expand your canopys coverage by adding sidewalls. Includes 20-ft. canopy extension with 1-3/8 and 2 frames, two 20L x 7W side panels, six white steel extension poles, six temporary anchors and tie-down ropes. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Canopies & Shelters.