I found that rack picture on another forums and the OP had that rack custom made for green tree pythons. I don't know where they got the tubs but they are acrylic tubs. Most people use something like CB70 tubs or Sterilite 1860 or 1960's, The tub dimenseions for the rack I have is 34x16x6(41qt) Sterilites. I use an animal plastics rack. If you look at their site under sterilite racks I have the 1860/1960 rack. Also what you said about having the length side faceing out is fine. I have seen a few rack systems done in that fashion, they just take up more room so most people prefer to go the other route. Heres a link to the original post I found that rack on. http://moreliaviridis.yuku.com/topic...2#.Ub1rzIzn-Uk