75mm 201 Stainless Steel Wall Air Vent Grille Exterior Round Ducting Ventilation Grilles Ventilation Duct Hood Durable Vent Cappacking: Vent x 1 Features: 1. Anti corrosion treatment, durable. 2.45 degree shutter tilt design effectively prevents rainwater from entering. 3. Thickened and dense insect proof net can effectively prevent mosquitoes and sundries from entering the pipeline. 4. There are multiple triangular openings 2 at the bottom, which can be directly inserted into the pipeline, which is firm and stable and not easy to fall off. Scope of application: It can be installed in kitchen, factory, hotel and other exterior wall vents. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.