[Material] This porcelain white air vent is made of stainless steel, durable and strong, able to withstand gravity, with oxidation resistance and an attractive installation appearance. [Design] Air vent hole features a honeycomb design with round holes that support breathable airflow; small round holes help prevent dust and are less likely to clog. [Environment] The circular mesh allows air to flow smoothly into living spaces, helping maintain a fresh and odor-free environment. [Installation] This vent is easy to install and fits directly into a hole of the same diameter. Bottom diameter is 25mm (0.98 inch), outside diameter is 35mm (1.37 inches). [Applications] Suitable for kitchen cabinets, wardrobes, decorative cabinets, offices, meeting rooms, and music halls.