Our clear PVC vinyl tarps with 2" heat-sealed seams from Tarp Surplus are often used to create outdoor enclosures. Block off part of a building with these clear tarps, or maintain visual access to covered equipment or supplies. This 20mil (18 oz./sq. yd.) waterproof 7' x 30' clear PVC vinyl tarp resists abrasion, acid, oil, grease, mildew and sun damage. Strong brass grommets are placed every 24" inside the edges of a 7' x 30' tarp that's also a popular choice for patios. The finished size of this 7' x 30' vinyl tarp is 6'6" x 29'6" after hemming.