The thru hull fitting from Centek with flapper valve is designed for marine exhaust applications. Centek's fiberglass thru hull fittings with flapper valve is designed for marine exhaust applications
4 in. Black Exhaust Thru Hull Fitting with Flapper | Centek 1200325
- Exhaust thru hull fitting
- For use with 4 in. inside diameter marine exhaust hose
- Includes rubber flapper to prevent backflow of water into the exhaust system
- Black color
- Made of compression molded fiberglass
- Will not corrode like metallic thru hulls
- 4 pre-drilled mounting holes
- 7 3/4 in. length
- 4 1/2 in. shank length
- 6 in. flange diameter
- Replacement flapper repair kit P/N 1200340
