A self adhesive weatherproofing foam tape for eliminating air, dust and moisture leaks around doors and widows. High density closed cell PVC foam. Airtight seal. Self adhesive. Color: Gray. Firm, waterproof, dustproof and airtight closed-cell foam Minimal compression for tight seal between surfaces Easy, self-adhesive application; seals top and sides of doors and windows 3/16-inch thick by 3/8-inch wide by 17 feet long.