What You Get: 50 pieces round air vent louver, inner diameter:0.98inch(25mm); out diameter:1.37inch(35mm); depth:0.33inch(8.5mm). Stainless Steel Material: Made of premium stainless steel material, sturdy and durable, rust-proof and wear resistance, not easy to deform. Breathable Design: The Air Vent is designed with small round holes, which can keep the air flow and prevent other insects and dust. Easy To Install: The inner diameter of the air vent louver is 25mm, mark the corresponding position on the wardrobe or drawer, install the round air vent louver on the wardrobe. Wide Application: The Air Vent Louver is suitable for Wardrobe, bookcase, drawer and cupboards, make the air flow and keep the wardrobe dry. Customer Services: We provide 30-days money-back and 12 months warranty, do not hesitate to contact us when you have any questions.