12ft. x 20ft. Silver Replacement Tarp for 10ft. x 20ft. Canopy Replacement cover for 10' x 20' high peak canopy frame. HEAVY DUTY: Tarp is 11-12 Mil thick, Fabric weighs 6 oz. per square yard EASY TO TIE DOWN: Rustproof aluminum grommets approximately every 18 inches and at the corners SUNBLOCK: This tarp blacks 100 percent of the sun rays. Great for providing shade on decks, patios, or anywhere shade is required CUT SIZE: Measurement of this tarp will be 6 inches or 3% to 5% shorter than listed size