Pin locks are about 9" diameter and they didn't fit at all. Ball locks are 8.5" and they fit. I guess you could put a collar on the door if you really wanted to but I wound up trading my kegs in at a local shop instead.
In case you're wondering, pin lock kegs don't even come close to fitting. Now I have to decide if I should get a new fridge or get ball lock kegs :confused: