Features: 1.USED FOR 22MM PIPE: The elbow fitting with the hole diameter of 22mm, precisely made, accurate in size, fits for 22mm hose, tube or pipe. 2.APPLICABLE MODELS: This thru hull exhaust skin is applicable for Webasto, for Planar, for Eberspacher, Chinese diesel parking heaters var4. 3.316 STAINLESS STEEL MATERIAL: The hull exhaust pipe socket adopts marine grade 316 stainless steel, with excellent rust and corrosion resistance. 4.CORROSION RESISTANCE: With excellent manufacturing technology, the surface is polished, more resistant to corrosion, and stable in salt water environment. 5.EASY INSTALLATION: Comes with bolts, nuts and big gaskets, thru hull exhaust pipe socket is simple to use, no complicated operations. Specification: Item Type: Thru Hull Exhaust Fitting Material: Stainless steel Application: Increase the gap between pipes, which can play the role of heat insulation and prevent damage to the hull and vehicles Compatible with: Fit for 22mm inner diameter hose pipe. Fit for Webasto, for Planar, for Eberspacher, Chinese Diesel Parking heaters var4