I tore down the old plywood platform and now have the old chain link kennels for sale (they are advertised on the swap and sell forum). I had a 11'x16' 4" slab poured and then bought two 5'x10' all welded kennels from Tractor Supply. I arranged the two kennels so that they share a common wall which free's up two fence panels allowing me to have a 10'x10' kennel with a 5'x10' kennel attached. Just thought I would show off a little as this is the kind of set up I have dreamed about for at least ten years now.