We bought a baby boa from Boamaster last night. We bought one of the cages that you are talking about also. He has two kinds the plastic or whatever the material he was talking about. I'm not the best at remembering things. Thoughs have the sliding doors in the front. We bought the one with the latch door (wood). We went a head and got the largest one he had so we wouldn't have to buy anymore. He recommended getting small tubs for a while and just sitting them inside the enclosure until he gets a little larger. The cages are super sturdy and easy to put together. We don't plan on getting anymore boas so the only thing I wish it came with is some kind of pedistal or stand Also nice guy to deal with.