[ldenise]

this is what I did (but I am not a breeder).
before Ahia had her pups I wanted everything to be ready. so I bought some PVC pipes and all the joints. I didn't even glue it all together so i could easily tear it down when I was finished with it. I just joined 4 pieces to make a big square. I made 2 of these. I got the 3 way joints and added 4 post, one in each corner, to make a free standing fence. It all sat on a new piece of left over carpet which the installers had left for me. It ended up being a 3' X 3' pen. I lined it with newspapers and drapped sheets/blankets over the sides. It didn't get messy during delivery because I would remove layers as needed.
this also doubled as a x-pen for the puppies until they grew out of it. I made it about 1 1/2' tall so Ahia could jump in and out but the pups couldn't.
PVC is so cheap and I was looking for a temperary multi use method.
I don't know if this would help you or not.