The tarp zipper opens from both sides for optimum versatility. It's an easy-to-apply peel and stick zipper that lets you create a door in any standard tarp or poly enclosure. The zipper and is 6.5 feet long. The tarp zipper opens from both sides for optimum versatility. It's an easy-to-apply peel and stick zipper that lets you create a door in any standard tarp or poly enclosure. The zipper and is 6.5 feet long and is 2 7/8" wide, that's wider than all other zippers currently on the market!