Re: seafari bilge thru-hull
I went to the specs at the Groco web site, actually you have to be careful. The elbows like you found - the pipe OD matches up with hose ID.
For the straight through hull fittings you can order either of 2 models for each fitting size. For example the 1" straight fitting has two models, one for 1" hose the other for 1-1/8" hose. Go figure.
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