The 16' x 20' heavy-duty premium clear poly tarp from Tarp Surplus is an excellent choice for greenhouses and patio enclosures for either residential or commercial use. Each clear tarp is meticulously crafted from a 14 mil polyethylene fabric that is both water and rot proof, offering year-round protection from the elements. This long-lasting clear poly tarp features grommets every 36" along with durable plastic reinforced corners that will keep it in place and prevent stretching as well as make for a stress-free installation process for your greenhouse or patio enclosure. The tear-resistant material also provides UV protection from the damaging rays of the sun. However, the clear poly tarp still allows a healthy amount of sunshine through, which is why the 16' x 20' is a great pick for a greenhouse. Finished poly tarps are always slightly smaller, so be sure to measure first to get a perfect fit. The 16' x 20' premium clear poly tarp will have a finished size of 15'6" x 19'6".