DescriptionThis item is a set of 20pcs 53mm air flow ventilation louver, which is made of stainless steel, antirust and durable to use. Can make the wind easily flow into the spaces where you are staying. Applied to places such as kitchen, offices, meeting rooms, auditoriums, music halls, etc.Features- Color:Silver. - Material: Stainless steel. - Size: 64*9mm. - Each Hole Diameter: 3mm. - Fit Hole Diameter: 53mm. - With round shape mesh hole. - With durable stainless material, silver tone color, round shaped, mesh holes design. - Can make the wind easily flow into the spaces where you are staying. - Applied to places such as kitchen, offices, meeting rooms, auditoriums, music halls, etc.