Unique design with gravity spring drain technology, automatic opening and sealing function to prevent odors, spills, or blockages, scratch-resistant and soft drain hole. Waterproof bathroom tile design with sturdy frame; Thickened filter basket can temporarily capture hair and prevent it from falling into the drain; Double drain core effectively prevents odors and ensures fast drainage. This product is different from conventional products, as is the drain pipe. Please compare the dimensions carefully to ensure the product. Specifications: Material: SUS 304 stainless steel. Surface treatment: brushed nickel. Product model: large diameter deep water seal. Style: straight line, melon seeds. Size: 110 x 110 x 82 mm, suitable for pipe diameter 75/90 mm, step depth ≥ 100 mm.