1. This door seal can effectively isolate wind, water, light, temperature and sound! This door seal is made of flexible materials and will not freeze or break under extreme temperatures. It can seal large gaps from 5/16" to 35/64". 2. The door seal has a special hollow design (different from other products). The door seal adopts a hollow design, which can reduce the transmission of sound and full temperature on both sides of the door, and this design can reduce the pressure on the door of the door frame when closing the door, and reduce the sound of closing the door. 3. The door seal can be installed quickly! No auxiliary tools and techniques are needed, and one side of the weather strip for doors and windows is covered with a strong viscous substance. Just tear off the film on the surface to install. The seal is 33/64 inches wide x 35/64 inches thic 4. Easy to cut! -This weather strip is made of soft rubber and can be trimmed to fit all doors or windows up . Door bottom seals can be used in indoor or outdoor applications, for commercial or residential doors, to help control your environment.