Dimensions: Diameter: 42mm, Opening Diameter: 35mm, Total Height: 10mm. Suitable for most sizes and easier to use. Material: Made of stainless steel and antioxidant material, which is not only durable and strong, strong antioxidant and antioxidant, but also has a beautiful circular grid design. Ventilation: The breathable can reduce the air in the closet, prevent foreign objects from entering, and protect the items in the closet. Elegant and fashionable, suitable for all lifestyles. Made of stainless steel, honeycomb, exquisite round holes with breathable design, small round holes can be dustproof and not easy to. Simple Installation: Round ventilation holes can be installed quickly and easily, are very easy to install, and the holes of the same diameter can be installed directly. Application: Porous ventilation holes are normally used for ventilation cabinets, wardrobes, cabinets, shoe cabinets, etc. Suitable for offices, conference rooms, concert halls, auditoriums, etc. where