Tarp Supply 12'x24' Heavy Duty 12 By 24 Cross Weave 10 Mil Silver Poly Tarp with Grommets Approx Every 18 Inches All Around, Corner Solid Plastic Bar Reinforcement for Extra Strength Silver Tarps - High-Density Woven Polyethylene 6.0 oz. Per Square Yrd. - 10 Mil. Thick - 14x14 mesh count Grommets every 24 inches Finished Size is 3-5% or up to 10 inches less after edges are hemmed water proof and UV treated on both sides for superior sunlight protection