Mr. Shrinkwrap 36" x 72" Zipper Access Door for Continuous Project Access, On-Demand Access, Provides Easy Access, Easy Installation, White You can place a Zipper Access Door on your shrink wrap project for continuous, on-demand access. Zipper Access Doors are designed with extra material around their edges that allow for the door to be taped to your wrap. Zipper doors provide easy access to areas under a shrink wrapped object. Opening and closing zipper doors is easier than zipping up a winter jacket. Theres no hassle of lining up the two halves of the zipper! The zippers on these doors are always connected, even when the door is completely unzipped. These zipper doors are made from a material that looks similar to shrink wrap, but is not meant to be shrunk and it should not have heat applied to it. Your shrink wrap project must complete the shrinking process before you install your zipper door(s). Once the shrink wrap film is shrunk and cooled, you can eye up where you want the door to be installed. Installation of a zipper door is very easy. Youll need a shrink film knife, some shrink wrap tape, and depending on where you want your door, you may need a ladder.