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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. The 84" long, heavy-duty, water proof #5 zipper is sewn to a 950-denier high-density polyethylene backing that has a permanent high-tack acrylic adhesive. Equally useful for providing access to cold frames, shrink-wrapped boats, and plastic tent structures. Instructions included.