@Remkon you're right, my one panther was free ranged most of his life, but now that I'm moving he's in the large atrium. Even that seems small for him at times. He's very active and uses the whole thing. My other 2 younger Panthers are in 18x18x36, but are moving to the xl reptibreezes in 2 weeks. They are much more relaxed and have cages filled with plants, so I'm thinking they may do fine in them. I would like more width though, it is extremely underrated. I wanted to suggest the 36", but that is the glass exo terra(not sure if there's any other options out there) and I felt glass might be too difficult for him(being younger, no offense) to manage, especially if not in the correct climate. Do these have drainage holes in the bottom by any chance or do they need pumped out somehow?