Pro Tect Blue Zipper- Zip-Ups. A double-sided zipper attaches permanently to your plastic sheeting, allowing you to create any size or shape entry. Single release paper makes for a faster installation. This is the best all-weather entry/exit system for sites that need protection against unwanted dust, dirt, and heat loss. Installation takes a matter of minutes and requires no special tools. CONSTRUCTION GRADE ZIPPERS by Pro Tect are the easiest and most economical way to provide a temporary Dust Control Door. Zip-Ups come with a double-sided zipper that attaches permanently to your plastic sheeting, providing a long-lasting temporary door.