boat exhaust flaps

[pressdriver]

Hi i need help in finding a 4 inch stainless still flap, port side has one and the other one is missing and i don't want to buy rubber one's, have been on Google with no success
Any help would be appreciated
thanks

 

[PCUK]

I can make you one if it's not too complex. Any pics?

 

[MapisM]

Do you mean external or internal flappers?
Mind, normally on transom exhaust you would want both (the external one typically being rubber).
I had both on my boat, fwiw.
Anyway, here's a couple of links.
Internal
External