One thing I definitely want to do on our '81 Tartan 37 is to replace the cowl vents we have in the
salon. I'm not overly concerned with the forward vents at this time since our
dinghy will spend a fair amount of time up there until we get
davits installed.
That said, I removed the
solar vents and measured a 4" threaded base. I've been looking on the
internet and see lots of 3" screw in vents, but not 4" except for the expensive
stainless steel versions. I'm happy with pvc vents, but all I see are friction fit. Anyone else add cowl vents, and, if so, where'd you get 'em?