ZipWall® heavy-duty zippers are the quickest way to create an entry in a plastic dust barrier wherever you need it. Two zippers create a hands-free entry – simply roll up the flap and hold the door open using two flap hooks. This hands-free door can be as wide as needed to get equipment and supplies in and out of the worksite. It contains two zippers, two flap hooks and one ZipperKnife™ sheeting cutter.