The square drain pipe and drain pipe are 20 cm wide and 20 cm long, with a center outlet of 2 inches (approximately 5.1 cm). High water flow is fast. It can be used for renovation of bathroom, kitchen, bathroom, courtyard balcony, garden and garage. It is made of high quality 304 stainless steel, which is firm, reliable and durable. The drainage surface is processed by wire drawing, which helps prevent corrosion, scratches and rust, and is durable. Double "filters" are suitable for debris/hair, a "filter" is a square drainage grid, which is smaller than a ring which can accelerate the flow of water and fix the hair, and the other is a stainless steel filter that prevents hair and debris from going down the drain. The lifting hook makes it easy to remove the grill or filter for daily cleaning. Gravity closing principle, once the water is not closed automatically, it is anti-insect and deodorant. An essential floor drain at home. Manual measurement of this product will inevitably have errors. Please compare the size carefully to purchase the product.