Quote Originally Posted by TitanTn View Post
Some common ones are: Attwood, Sea-Dog, and TH Marine. There's lot of different kinds, and there's lots of different brands that all look exactly the same.
West Marine Carries them, two of mine are Sea-Dog and two are from West Marine. I have a local family owned boat supply store a mile down the street from my house and they only had 2 black vents...west marine is right next door to them and only had 2 also. It worked out perfect, cant even tell the difference.