2pcs 316 Stainless Steel 4 Inch Round Air Vent Boat Air Vent Cabin Air Vent

Made of high quality 304 stainless steel, strong and durable, corrosion-resistant, high hardness, non-toxic and pollution-free. Designed to cover wall or ceiling openings and air ducts indoors or outdoors. The rear air vent is passivated, which can effectively prevent rust. Built-in mesh protective grid, can isolate things to give you a healthier life. The vent duct cover can be used in interior exhaust pipes, suitable for bathroom vents and extractors, air conditioning units, kitchen fans, all dryer vent pipes, etc.