mushroom vent diameter?

Oct 30, 2019
124
Hi Folks,

The white plastic mushroom vents on my aft deck (behind the cockpit) have
disintegrated, and I need to replace them both. I neglected to measure
the oppennings when I was at the boat. Can anyone tell me the diameter of
the holes?

Thanks!
Nathan
"Damsel" in Clearlake CA
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Oct 31, 2019
562
I think the diameter for my vents are about 10 inches, but these may be a different make.
Wilhelm, V-257