The Air Vent is made of plastic, durable, and strong ability to withstand gravity, not only oxidation resistance but also a more beautiful installation effect. Plastic Mesh Hole, round holes conform to the breathable design, small round holes can be dust-proof. Circular mesh can make the wind easily flow into the spaces where you are staying, giving you a fresh life and work environment. This vent does not require much effort to install, the same diameter hole can be mounted directly. Applicable for ventilation of cabinets, shoe cabinets, decorative cabinets and offices, and meeting rooms. Not for drain Screen.