20' x 27' (6' Drop & Flap) Ultra Lightweight Parachute Lumber Tarp | 18 oz/6oz Combo Tarp20 27 Lightweight Parachute Lumber Tarp 6 Drop 18 oz Vinyl Top This 20 27 parachute tarp is engineered for flatbed drivers who want full size coverage without the full weight of traditional lumber tarps. It features an 18 oz vinyl coated polyester top and flap to protect against rain, sun, and road debris, while the sides are made from 6 oz polyurethane coated nylon the same ultra light material used in parachutes and airbags. The result? Easier