Re: 19 7/16 X 19 7/16 Bomar 100 replacement options
Our two Vetus dorade vents are in the saloon - port and starboard 10 or 12" aft of the bulkhead. The head has a small Bomar opening hatch with an inside spigot of about 10x10". Our boat has a number of other deviations from the brochure boats. I think all were factory installed.
1988 PSC 34