Feature:1. Application: Boats airflow vent cover is suitable for RV, camper, boat, yacht, sailing boat, marine, fit for 3in/7.6cm to 3.25in/8.3cm pipes.2. Adjustable: By adjusting the regulating valve, the air vent can be controlled to meet your needs, which is convenient and practical.3. Installation Place: Airflow vent grille can be perfectly installed on the ceiling or wall, also very easy to disassemble for conveniently cleaning.4. Premium Material: Made of high quality stainless steel material, environmental friendly, safe, sturdy, durable and antirust.5. Good Decoration: Fine workmanship, beautiful decoration for home, can be used for a long time, good reliability.Specification:Item Type: Boats Airflow Vent CoverMaterial: 316 stainless steel + ABSSize: Approx. 3.5in/8.9cmSuitable Pipe Size: 3in/7.6cm to 3.25in/8.3cm, with buckleSurface Color: High Polished 316 Stainless SteelInstallation Method: Embedded InstallationApplication: Yacht, RV, Bus entrance, stairs, warehouse roof.Package List:4 xBoats Airflow Vent Cover