10x20 area poured sectioned into four kennels I had one chainlink kennel I recycled but used doc bob kennels from TSC for the rest and have been pleased. I used four inch pipe for my drains and used old five gallon buckets for drain hole. Sloped slightly toward the drain. Only thing I would change is put a small one or two inch ledge around the whole thing to keep all waste inside. Put lag bolts in cement to secure kennels two. They stay in place good now but when I add the roof I'm worried the wind will pick up the kennels.
