Selected Material The sewer floor drain cover is made of ABS material for durability and long lasting performance. Automatic opening and closing design The seesaw design automatically opens when water drains to ensure smooth drainage, and automatically closes after draining to seal odor and sewer gas. This helps prevent backflow, water leaks, and overflows in the bathroom. Blocking function and protection A nonslip silicone ring on the edge of the water collector catches hair while not impeding water flow. The anti backflow device is designed to effectively prevent debris and hair from entering the drain, reducing the risk of shower drain clogs. Easy to use Plug and play installation allows liquids to flow into the sewer effortlessly, delivering long lasting results. This product is an essential sewer accessory for your home. Why you need it Improves drainage efficiency by opening for flow and closing to seal odors Reduces backflow and prevents leaks and overflows Catches hair and debris to prevent clogs without slowing drainage Simple, reliable operation with durable ABS construction Use scenarios 1) Family bathroom with daily hair wash and shower usage to minimize clogs and odors 2) traffic households where quick, reliable drainage and odor control are important 3) Home renovation or installations where a durable, long lasting drain cover is desired