Whether you are making a residential greenhouse or a commercial one, the 30' x 50' heavy-duty premium clear poly tarp from Tarp Surplus is the ideal choice for all-around protection all year. Each clear poly tarp features a 14 x 14 mesh count and heat-sealed seams that also sport reinforced plastic corners. Made from 14 mil polyethylene along with a three-ply design, the heavy-duty tarp is both rot and waterproof. It also safeguards from damaging UV rays. Each 30' x 50' tarp has grommets strategically placed every 36". The material is tear-resistant and offers artic flexibility as well. Finished tarp sizes are always slightly smaller. So, be sure to measure the area to assure you have the correct size. The 30' x 50' clear poly tarp has a finished size of 29'6" x 49'6".