The strip is made of a specially formulated EPDM rubber that provides excellent performance, extruded resilience, and durability in cold environments. Weatherstripping can be used in both interior and exterior applications, for commercial or residential doors to help control your environment...quick solution! Seals and blocks out unwanted wind, water, light and sound! - Simply using a draft strip around your door or window frame can go a long way toward helping you maintain a comfortable temperature in your home. It is made of a flexible material that will not deteriorate or crack in extreme temperatures. Use with other brands of weatherproofing products to keep your home more comfortable and energy efficient all year round. It seals medium gaps from 1/4'' to 3/8''...better material! No tools or experience required - The sealing strip is 18 feet long. If the length of one roll is not enough for use, just buy more rolls to extend. One side of the super strong self-adhesive door/window weather stripping is covered with a strong sticky substance. Just tear off the yellow film on the surface to install. It is suitable for doors, windows, car trunks, hatches, electrical enclosures, coolers, covers, etc. Special sound insulation hole design - Different from other sealing strips, the sealing strip adopts a multi-porous special design. The multi-porous always reduces the sound transmission on both sides of the door and absorbs a part of the sound waves to reduce noise