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. Item Type: Boats Airflow Vent Cover Material: 316 stainless steel + ABSSize: Approx. 3.5in/8.9cm Suitable Pipe Size: 3in/7.6cm to 3.25in/8.3cm, with buckle Surface Color: High Polished 316 Stainless Steel Installation Method: Embedded Installation Application: Yacht, RV, Bus entrance, stairs, warehouse roof 4 x Boats Airflow Vent Cover