Ours are 5 x 10. We didn't want to use concrete either, due to having to hire a contractor, etc. I went to our local brick supplier and bought 12x12 concrete pavers, just the plain square ones. The ground was already level where we wanted the kennels, so I just laid the pavers right on the ground and set the welded wire kennels up around them. The pavers fit inside the kennels just right, I only had to have one row cut along one end. Our dogs are only in them when we leave the house for errands, so they have never "gone" in them (except the puppy, who was just little and not housebroken at that age either.) The big dogs just wait. Ours aren't covered, but I put shade screen over them in the summer. Also purchased a single stall mat for each run, so they have the choice of laying on the black rubber or the cement pavers, or in their k-9 condos.