[Material] This porcelain white air vent is made of stainless steel, durable, and strong ability to withstand gravity, not only oxidation resistance, but also more beautiful installation effect.[Design] Air Vent hole with honeycomb design, exquisite round holes conform to the breathable design, small round holes can be dust-proof and not easy to block.[Environment] Circular mesh can make the wind easily flow into the spaces where you are staying, it will giving you a fresh and odorless life and work environment.[Installation] This vent does not require much effort to install, the same diameter hole can be mounted directly. Bottom diameter is 19mm/0.74Inch, outside diameter is 29mm/1.14Inch.[Applications] Suitable for kitchen cabinet, wardrobe, decorative cabinet and offices, meeting rooms, music hall.