Prevent Water Accumulation: The 135° sloped surface directs rainwater away from door and window gaps and the sill, ensuring smooth outward and downward drainage to effectively prevent water accumulation and seepage. This keeps the sill structure dry and protects the exterior finish Rubber Waterproof Strip: Made from flexible rubber, this weather-stripping seal is waterproof, long-lasting time, and tear-resistant, offering a robust waterproof barrier; it can also be cut to any length to suit your needs Stepped Drainage: It features a scientifically engineered stepped, tiered structure with a slope that is lower on the outside and higher on the inside. This design guides rainwater and accumulated water rapidly outward along the stepped channels, achieving the dual functions of blocking water and facilitating drainage Easy To Install: Featuring a self-adhesive design, installation is quick and easy—simply peel off the backing to stick it in place; no drilling is required Wide Application: Suitable for most exterior doors, sliding windows, windowsills, door frames, and even RV doors and windows. It adapts to gaps of various shapes and sizes. Whether you need to seal an entry door, bedroom window, sliding patio door, or garage door, it meets your needs