Durable self-adhesive zippers attach to plastic sheeting and create an entry in seconds. Two zippers can create a hands-free door. The 7 foot long 3 inch wide heavy-duty zipper withstands high traffic. Specially designed ZipperKnife™ double-cuts the plastic to prevent jams. Flap hooks hold the entryway open for easy access. The 2-Pack includes two heavy-duty zippers, two flap hooks, and a ZipperKnife™ sheeting cutter.