Engine Compartment Vent holes

[imspacemancraig]

Anyone know off hand what size tubing is on an 86 Carver Mariner 32? I am no where near my boat and want to look up new blowers but not sure if there are 3 inch or 4 inch tubing into the blowers. I am assuming it is the original tubing in there...

Thanks in advance!

 

[Sea Bitt]

I would say 3", but I could be wrong.

 

[imspacemancraig]

I am thinking the same, but not sure...