Features: brand new and high quality Large displacement design. Insect, pest and rodent prevention, odor control. 360 degree drainage, the cover opens when draining. When it is not draining, the cover closes tightly to block peculiar smell. 36L/min drainage capacity, 10 kg washing machine drainage can also easily deal with. Large flow direct discharge, drainage gravity is transformed into centrifugal force to accelerate drainage and sewage. Can be used with floor drains in bathrooms, bathrooms, basements and laundry rooms. Plug and for play design, simple and convenient installation, no need to change the existing floor drain. Specification: Material: Plastic Optional Color: Deep Blue, White Optional Ring Style: 1 Rubber Ring, 2 Thread Total Size: app. 4.4x4.3cm(1.73x4.69in) Inside Diameter: app. 3.9cm(1.54in) Use Pipe Depth: 60mm Floor Drain Diameter: 36-45mm Quantity: 1 pc Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Drain Backflow Preventer(other accessories demo in the picture is not included.)