4" x 33', White, Butyl Flashing, Tite Seal, Waterproof, Self Adhesive Flashing Composed Of Our New Steel-Loc Butyl Adhesive & A Poly-Ethylene Facing Material, Aggressively Adheres To Wood, OSB, Aluminum, Vinyl, House Wrap, Steel Drywall Studs & More, Can Be Applied To Temperatures As Low As 15 Degrees Without Need Of Primer, Impermeable To Water, Moisture Vapor & Air, Can Be Used To Flash Around Windows & Doors, Seal Joints In Sheathing Panels, Around Vents, & Other Openings, Use Under Most Exterior Surfaces Including Brick, Stucco, Wood & Vinyl Or Wood Siding & Can Be Left Exposed For 180 Days.