Check the listing for details. 4 Inch Spring Round Air Vent, 2pcs ABS Adjustable Air Diffuser. Condition: New. Listed at 34.77 USD. The spring round air vent is made of durable ABS plastic, ensuring a long service life. The spring-loaded design allows for easy installation and removal.It is an excellent choice for interior decoration.SpecificationOpening Size: 9.3 cm / 3.66 inchDiameter: 14.5cm / 5.7 inchHeight: 10.0cm / 3.9 inchMaterial: ABS plasticColor: WhitePackage includes: 2 x Adjustable Spring loaded Round Air Vent.AdvantageMade from durable ABS plastic, these round air vents are anti-corrosion and anti-condensation. You can rotate the vent panel to control the airflow. The convenient design is easy to install and remove.InstructionSelect a suitable location on the ceiling, wall, or duct, ensure the surface is clean, and securely install the vent cover.