: These home floor vent covers are made of high quality iron. Sturdy and , not easy to break or deform, strong safety. It is coated with rust-resistant material to that the vent covers can adapt to any environment and have a long service life. EASY TO INSTALL: Installation can be done quickly without additional tools. Please measure the height and width of the opening before ordering. 4x10 INCH FLOOR AIR VENT: The included 3-Pack floor register features a classic louvered design that not only serves as a decorative feature in the room, but also llows air to circulate. The air vents have a clean, smooth look and the edges of the vents fit snugly into any floor finish to prevent risks. ADJUSTABLE AIRFLOW CONTROL: 4x 10Inch floor vents covers provide efficient and reliable airflow in living spaces. The floor vent with adjustable check valve on the back is easily adjustable; when the valve is closed, it effectively prevents conditioned air from escaping. WIDE APPLICATION: This air vent