Features: 1.0.9in: Our hull exhaust skin fits are suitable for all heater systems with 0.9in the inside diameter of exhaust system. 0.9in outer diameter is suitable for hoses with 0.9in inner diameter. 2.Fitment: Our hull exhaust fittings are replacement for Webasto ,replacement for Plan ar , replacement for Eberspacher and replacement for var4 derv parking heater 3.Function: Our curve thru hull exhaust skin can increase the space between pipes, which can play a role in thermal insulation and prevent damage to the hull and vehicle. 4.Stainless Steel: Thru hull exhaust skins are made of 316 stainless steel, which has better rust and wear resistance in humid air or high temperature weather. 5.Replacement: Our hull exhaust fittings can replace old worn parts. After use, if they feel broken, they can be replaced with another one. This cycle is very convenient. Specification: Item Type: Hull Exhaust Fittings_x000D_ Material: Stainless steel_x000D_ Application: Increasing the space between pipes can act as thermal insulation and prevent damage to the hull and vehicle._x000D_ Characteristics: Thru hull exhaust skins are made of 316 stainless steel. Compared with 304 stainless steel or iron materials, 316 stainless steel has better rust and wear resistance in humid space or high temperature weather._x000D_ Fitment:_x000D_ _x000D_ Replacement for Webasto_x000D_ Replacement for Plan ar_x000D_ Replacement for Eberspacher_x000D_ Replacement for var4 derv parking heater