AntiBackflow Mechanism Our shower drain preventer features a magnetic seal that automatically opens during water discharge, guaranteeing efficient drainage while preventing backflow and unpleasant scent escape. This helps keep the bathroom fresh and hygienic. Fast Drainage System Engineered with rotating fan blades, the drain core uses gravity to create centrifugal action for quick water drainage. This reduces water accumulation and helps maintain a clean shower space with reliable performance. Easy Installation Simply insert this brass drain preventer into your sewer opening for immediate use. The removable filter with an attached handle allows effortless cleaning and maintenance, while the unit fits drain sizes from 1.9 to 3.9 inches. Long Lasting Construction Crafted from brass and reinforced plastic, this shower drain preventer is built to withstand daily use. It includes a silicone reducer circle and a hair filter cover, offering lasting durability and consistent drainage performance. Use scenarios In a family bathroom with regular hair and soap buildup, the antibackflow mechanism prevents odors and maintains a fresh shower area. In rental properties, gyms, or traffic bathrooms, easy cleaning with the removable filter reduces maintenance effort and helps avoid backflow issues. During bathroom renovations or installations, compatibility with drain openings from 1.9 to 3.9 inches ensures a proper fit without changing existing plumbing.