Features: brand new and high quality High Quality: Stainless steel air vents are made of stainless steel, anti-rust and corrosion resistant, durable, not easy to deformation, which can ensure a long service life. Ventilation Round Mesh Hole Design: The mesh hole has a honeycomb design, which is very consistent with the concept of breathable design. Small round holes can be dustproof, windproof and not easily blocked. Activated Carbon Adsorption: The built-in activated carbon package can absorb moisture and deodorize, and can adsorb harmful molecules in the air. Easy to Use: Round ventilation grille is very easy to install, and holes of the same diameter can be installed directly, simple, fast, it is a ventilation essential. Wide Application: Air vent louver are for ideal for use in cabinets, shoe cabinets, meeting rooms, concert halls, and other places, offers you for fresh and odourles environment. Package Includes: 1Pc x Ventilation Hole Specifications: Material: Stainless Steel Color: Silver Color Type Optional: Open Hole 60mm/Open Hole 90mm Height: approx.1.6cm/0.63in Diameter1: approx.7cm/2.76in Diameter2: approx.10cm/3.94in note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you