This 4 in. square floor drain fits U.S. standard no‑hub drain base systems with a 2 in. central outlet, delivering a flow rate of 5.28 to 6.6 gal. per minute for smooth drainage. The grate blocks hair and debris to reduce pipe clogs and keep bathrooms clean and dry. It meets Watermark and CUPC certification standards for reliable performance. Made of premium SUS304 stainless steel, it resists corrosion and oxidation, featuring a modern minimalist look that complements various bathroom styles. The removable inner basket with a lifting hook allows easy cleaning of trapped dirt for simple daily maintenance. Suitable for both residential and commercial use, it installs in bathrooms, kitchens, balconies, laundry rooms, restaurants, hotels, malls, schools, hospitals and transit hubs to fit common drainage layouts.