Easily attach, adjust, remove and reuse your dust barrier zipper at a fraction of the cost of disposable zippers. These heavy-duty 7-gauge zippers provide a high level of break resistance. The two-layer system also keeps your plastic sheeting out of the path of the zipper teeth, reducing the possibility of zipper jam. Mounting Strips (#20991 - 20992, included) allow you to reuse these zippers multiple times. These strips dramatically reduce the risk of unwanted detachment from your dust barrier. This kit includes six 80" X 2" Heavy-Duty Reusable Dust Barrier Zippers (#20982 - 20986), 12 Mounting Strips (#20991 - 20992), 12 Lockout Zip Ties and one Carrying Case (#20987).