|Posted: April 29 2009 at 12:54 | IP Logged
Curley has a good suggestion. I began to look at this late last year and my first thought was to look at the port frames from the inside to get the manufacturer name, then look them up online, if possible. I'm not at the boat right now and can't remember the brand name, so I can't help right now with the name.
I would do that as well as what Curley suggests.