1.Easy to Install: 100% new through hull piping fittings. Easy to install with screws. 2.Marine Grade Stainless Steel: Made from Marine grade 316 stainless steel, polishing, resistance and durability in the saltwater environment 3.Air Vent: Suitable for , , Var4 parking heater. 4.Fit for 24mm inner diameter hose pipe 5.The Air Vent can increase the space between the pipes, which can play the role of heat insulation and prevent damage to the hull and vehicles. And the is polished. Seawater environment resistance, good durability. Product Name: Air Vent fittings Type: Air Vent fittings for Marine Heater Applicable models: Car Truck Boat Colour:Silver Material:Stainless Steel Package Contents: 1x exhaust connector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.