Air Circulation These Circular Vents Are Designed To Circulate Air In Cabinets, Sheds, Provide Adequate Ventilation, Direct Air Away From The Vents, And Maintain Airflow To Prevent Moisture And Mold. Easy To Assemble Side Mounting Holes Make It Easy To Install And Secure The Grille In Place. Diameter: A - 53Mm, X - 64.5Mm, These Round Vents Can Be Easily Used To Cover Holes Up To 52Mm. Durable Compared To Standard-Grade Vent Covers That Use Thinner, Low-Grade Metal, The Black Round Vents Are Made Of High-Quality Stainless Steel For High Corrosion Resistance And Strength. Stylish Sleek Black Finish The Modern Black Design Of The Small Round Vents Accentuates Your Decor And Adds A Finishing Touch. The Surface Is Smooth And Will Not Hurt Your Fingers During Installation. Multipurpose They Are Used In Storage Sheds, Good Enough As Soffit Ventilation Mesh, And Can Also Be Used For Aquariums/Solar Generators/Computer Boxes/Bedroom Cupboards/Cabin Storage/Lid Ventilation Hoods In Kitchens. Package Contains 10 Packs Of Vent Lids. About Shipping: All Items Will Be Shipped Within 3 Working Days After Payment Is Received. In Most Cases, You Will Receive It Within 8-12 Days. The Specific Delivery Time Depends On If You Have Any Questions, Please Feel Free To Contact Us During The Shopping Process, If You Have Any Questions, Please Feel Free To Consult Us, We Will Reply To You Within 24 Hours, I Wish You A Happy Shopping, Thank You For Your Cooperation, We 'Will Leave You Satisfied.