The vent cover is designed for HVAC systems in residential and commercial settings. It can be installed in walls, ceilings, or floors, fitting standard duct openings. This vent is suitable for spaces such as homes, offices, and other environments that require efficient ventilation. Specification Color: White Material: Aluminum Alloy Duct Opening: 15.2 x 25.4 cm / 6 x 10 Inch Outer Size: 3.6 x 19.7 x 29.8 cm / 1.42 x 7.76 x 11.73 Inch Drill Hole Diameter: 4 mm / 0.16 Inch Packing List:1 Pcs x Air Vent Covers, 4 Pcs x Screws Advantage The air supply grille is made of durable, rust-proof aluminum alloy with a powder-coated finish for long-lasting performance. Its egg crate design maximizes airflow efficiency while improving air filtration by trapping dust and particles. Easy to install with included screws, it ensures a secure fit and hassle-free maintenance. Instruction Align the screw holes with your existing duct frame and secure using included screws. NOTE: Measure your duct opening before ordering - select the grille size that matches your exact duct dimensions (not outer frame size). Clean regularly to prevent dust buildup.