The biggest issue that I've found is that it really just depends on which part you're specifically looking for, who makes it, is it available for the public to purchase or is it sold directly to Grady White? Etc. A fair amount of their parts are made by other manufacturers, and then GW adds them during the boat building process. You might be able to find the brand and part number online from one of their brochures, an owner's manual or from someone else that's ordered it. But more likely than not, you'll still probably have to call up your local GW dealer, talk to their parts department and get a brand/part number that way. Someone a few months back was looking for the port windows and I just happened to see a picture of one online with the name of the company on it. A little bit of detective work and a few minutes later, I found the company name and part number on my own. Sometimes you might get lucky, other times not so much.