I have 2 kegs in my fridge, that is all that will fit. I just noticed that if I could cut the parts off that were holding shelves I could get one more in there. Could I do this without creating problems with my fridge.
There's a thread about cutting off all those shelf ridges with an oscillating saw. Do a (Google) search. I think you also need to remove the door shelves panel.
You can easily seal the exposed foam by smearing on a coating of silicone caulk. It won't be pretty, but it will prevent the foam from harboring mold or bacteria.