When I had a keezer, I made the collar tall enough to get a keg on the hump, had the smallest size freezer and could get three on the floor and one on the hump, with the co2 bottle outside, like @Toxxyc said, it was very hard to get kegs in and virtually impossible to cleanup anything inside. I'm almost 6' tall and would use a step stool to get kegs in.
I now have kegerators with doors and it is much easier.
I now have kegerators with doors and it is much easier.