Tarp Zip Up is designed for use with ordinary construction vapor barrier to seal off work zones, this adhesive-backed zipper is perfect for creating a simple, resealable access doorway. It installs in minutes without special tools and will permanently bond to any clean plastic sheeting. It lets you control air movement for temperature maintenance but, more importantly, it keeps dust from migrating throughout the house. Equally useful for providing access to cold frames, shrink-wrapped boats, plastic tent structures and ice shacks. Instructions included.