PTM Tarps Heavy Duty White Polyethylene Tarp - 18' x 20' - TW1820

Poly tarps are sold by their cut size, and the finished size, after accounting for hems and grommets, is typically about 6 inches smaller in each direction. The 18' x 20' tarp on this page has a finished size of approximately 17'6" x 19'6". This means it runs about a foot wider than the 16' to 16.5' width you require. The next size down, the [PTM Tarps Heavy Duty White Polyethylene Tarp - 16 x 20 - TW1620](https://www.ecanopy.com/ptm-tw1620.html), finishes at about 15'6" x 19'6", which falls just under your minimum width requirement. Unfortunately, we do not stock a 17' cut width in this product line, nor do we offer custom or cut-to-order sizes. Therefore, we do not have a tarp that finishes between 16' and 16.5' wide. We apologize that we cannot meet your exact width needs, and we understand its importance for your fixed position attachments. Regarding the 20' dimension, both the 18' x 20' and 16' x 20' tarps finish at approximately 19'6". On your other specifications: this heavy-duty white poly tarp is constructed from 12-mil, three-ply woven polyethylene, weighing 6 ounces per square yard. It features UV protection on both sides, meeting the lower end of your 12-16 mil thickness range. The tarp includes rope-reinforced hems, reinforced corners with plastic caps, and rust-resistant aluminum grommets spaced approximately every 18 inches on all sides. You can view all available widths and lengths on our [Heavy Duty Tarps](https://www.ecanopy.com/heavy-duty-tarps.html) page.