The Trimaco Peel + Stick Zipper creates an instant doorway on tarps, plastic coverings, poly and vinyl fabrics and shrink wraps. The self-adhesive zipper is double-sided for ease of operation from either side. Great for use on dust containment systems for various job types including residential remodeling, renovations, industrial restoration and remediation. To use, first measure the height of the desired door. Once the plastic sheeting is in place, remove the paper backing to expose the adhesive. From the bottom up, slowly adhere the sticky backing to the heavy-duty plastic sheeting. Once the zipper is securely in place, unzip and cut an opening with a box knife. Federal law requires that contractors performing renovation, repair and painting projects in homes, childcare facilities and schools built before 1978 must be certified and trained to follow specific work practices to prevent lead contamination. The Peel + Stick Zipper helps you meet lead safety standards.