20' X 20' Dark Green UV Rated 70% Blockage Prefabricated Sunblock Shade Panel, Shade Tarp Panel, Greenhouse Shade Cover W/Grommets Triple GrommetsTriple Security. Heavy Duty Sunblock Screen.Windscreen. Made in the USA. 100% UV stabilized HDPE. Breathable, None unravel. All 4 sides taped by double stitched with one metal grommet per 2 feet Interval.