Protecto Wrap BT25XL 8425B12754SSW Window and Door Flashing Tape, 75 ft L, 12 in W, HDPE, Gray/White, Self-Adhesive

BT25XL" is a cold applied self-adhering membrane composed of a tough cross laminated high-density polyethylene surface-coated on one side with a layer of proprietary blend of polymer modified asphalt adhesive.