【Automatic Drop-Down Seal】 The automatic door sweep automatically drops to create a tight seal when the door closes and retracts when opened. This automatic drop down door seal eliminates manual adjustment while reducing wear on carpets, tile, vinyl, and hardwood floors 【Superior Protection & Comfort】 This door draft stopper effectively seals gaps to block drafts, dust, insects, small pests, water, light, and noise. It helps maintain indoor temperatures by keeping heated or cooled air inside, making it an ideal Door Solution for year-round comfort 【Durable Aluminum Alloy & Silicone Seal】 Made with a premium Aluminum Alloy housing and a flexible silicone door bottom seal, this door seal strip bottom provides long-lasting performance, excellent weather resistance, and quiet operation for both interior and exterior door applications 【Surface-Mounted Design】 Installs directly onto the bottom of the door with screws—no routing or door modification required. Suitable for most wood, metal, and aluminum doors for fast and secure installation 【Improve Energy Efficiency】 This weather stripping for bottom of door creates a reliable door gap filler bottom that minimizes air leakage and outside noise. Perfect as a bottom door cover, under door sealer, or door sealer bottom to improve comfort while reducing energy loss through door gaps, Manufacturer: Innovz