I don't have a 22 - mine is an 18. I know with my rack that I use I can comfortably get 6 slabs on mine easily. I'm sure if I got a little creative I could do more. But with your 22 you should be able to do more than that. I would suggest a good rack - one with 5 or 6 slots. Mine has 6. But having a good rack will definitely help you maximize your space.