Painting contractors create lots of dust from surface preparation, patching, spray painting, and more. The ZipWall dust barrier system isolates the work area, and also contains odors. This is especially important in occupied spaces like commercial office space, hospitals and homes. Ideal for indoor use where temperatures don't go below 55 degrees Fahrenheit. Use one zipper for a simple doorway or place 2 zippers side by side to create a wide roll-up doorway that makes it easy to move tools and building materials in and out of the worksite. Each ZipWall 2-pack contains 2 self-adhesive Zippers. 84" length. ZipWall Products.