Made of ABS, compact and solid. Easy to install, compatible with 4 inch ducts. Easy to install, available for wall or ceiling mounting. Adjustable, you can rotate to change the airflow as needed. Detachable, the white panel can be disassembled, very convenient for daily cleaning and maintenance. Color: black and white Material: ABS Size: diameter 148mm, bottom diameter 92mm, height 72mm Package Contents: 4 x Air Vent Grilles Grid Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.