WindowWrap PSX-20 Singles are labeled for individual sale and available in a roll size of 4" x 67'. Product is a patented, self-adhering 25 mil waterproofing flashing tape constructed of a tough, aluminized, multi-layer polymer film. It is coated with a specially formulated rubberized asphalt to stand up to a maximum of 180 days of UV exposure. WindowWrap effectively stops water leaks around windows and doors while reducing outdoor noise and air infiltration. The aggressive adhesive securely bonds the window flange to the exterior wall, and the rubberized asphalt self-seals around nails and other construction fasteners. Complies with AAMA 711-07 as specified in ICC-ES AC148, Report ICC-ES ESR 2783. Backed by a 10-Year warranty.