Description: 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 4" to 4.25" pipes 100% Brand new and high quality Specification: Part Number: 81933SS-HP Max. Diameter: 4.5? Diameter: 4?/100mm Cutout: 4.25?/108mm Net Air Flow Area: 7.0 square inches Package Includes: 1 Piece Boat Marine Air Flow Vent
