1).High Quality➯ This 4 inch Louvered Air vent is made of high-quality stainless steel;Maximum corrosion resistance and durability in the saltwater environment.
2).Apply to➯ Designed to cover wall or ceiling openings and ducting vents and decoration.Both for interior or exterior use.
3).Widly use ➯ Used in boats, yachts,truck RV,yard;Good assistant for marine work & Home gardening work.
4).Dimensions ➯ O.D 4"(101.6mm);Hole to Hole size: 2-3/5"(65mm);Hole size:Φ3.3mm; Net weight:112g/2pcs
5).Contains ➯ 2X Louvered Air vents ( no screws included)