Multi-function It can be used to prevent wind, dust, sound, cold, protect windows and doors, and reduce wear and tear on windows/doors when opening and closing. 100% brand new and high quality. Waterproof, windproof and excellent anti-aging properties. Wide Application: Widely used in various sliding windows, sliding doors, security doors, closet doors, etc., to reduce damage to doors and windows. Important Tips: Extreme temperatures can cause the adhesive to degrade. This seal can only be applied when the air and surface temperatures are between 55 - 104F (13 - 40C). If 45-54F (7 - 12C), you can use a hair dryer to heat the tape and the surface in a 6-inch (15 cm) section before applying. Directions: 1. Apply to a clean, dry surface. 2. Peel off the protective backing starting from the head of the roll. 3. Find and hold the end of 4. Work the length of the tape, press in place, and continue to remove the protective backing. 5. When you get close to desired length, cut to fit before removing all protective backing. Shape: D-shaped foam seal strip; Size (approximately): 7/20" x 6/25" (9 x 6mm) Fits gaps: 5/32" to 13/64" (4-5mm). This product comes in two 8.25 ft (2.5 m) D-shaped seals.