-No air leakage: 6 feet long (about 1 meter 8) sealing strip, width 4.4 cm T-shaped slot design, directly into the door frame can be used Ensure solid embedding, improve the sealing performance -Double-layer design is quieter: Top and bottom sealing edges make the door closing sound much quieter Optimize the closing pressure, reduce the wear and tear of the door frame and prolong the service life of the door You don't need to slam the door hard to close the door, it can be closed tightly with a gentle push. -Rubber material is super durable: The rubber is automobile grade rubber, not afraid of sunshine or freezing ,No deformation in high temperature in summer and no hardening in low temperature in winter ,It won't be aged and cracked in 5 or 6 years. -Easy to install, you can do it yourself: T-slot straight design, directly along the door frame into it.No tools, 5 minutes to get it done. After the installation of the door switch is more smooth, but also protect the paint. -Wide range of applications: It is suitable for a wide range of different aluminum door styles. Including car door seals, RV compartment seals, boat cabin seals, tailgate seals, camper shell seals, truck roof seals and so on.