ITEM NAME:1x RV Marine Boat Yacht 3"/76mm Stainless Steel Round Airflow Vent ADSGA Descriptio n Description: Diameter: 3†³/76mm Cutout: 3.25†³/83mm Net Air Flow Area: 3.997 square inches Features: 100% Brand new and high quality Suit for RV /Camper/boat/yacht/Sailing boat/marine 316 stainless steel, corrosion resistant and durable No fasteners required for installation Good replacement, fit for 3" to 3.25" pipes Package included: 1 Pcs Boat Marine Air Flow Vent Note: 1.As different computers display colors differently, the color of the actual item may vary slightly from the above images. 2.Please allow 1-3 CM differs due to manual measurement. Thanks for your understanding. High quality buy, happy buyï ¼ RV Marine Boat 3" 76mm Stainless Steel Curved Clad Airflow Vent.RV Marine Boat 3" 76mm Stainless Steel Curved Clad Airflow Vent. 1 Pcs Boat Marine Air Flow Vent. Suit for RV /Camper/boat/yacht/Sailing boat/marine. 316 stainless steel, corrosion resistant and durable.