I’ve just joined two XL screen enclosures together. I used what I could find without much fuss - thin wires and tiny hinges. If you go this route, find and use flat headed screws where the sides will be butted up against each other to avoid any gaps. If you can’t find any, you’ll have to sink the screws the best you can. To help keep them together, they sit on a 4’x2’ heavy duty shelving unit and the extended frame of the unit has kept it all together. If anyone were to look closely at my enclosures, they might at least giggle at how I patched it all together, but it works very well and so whatever.
Another challenge is addressing the drainage as no matter how well you have the two enclosures attached, there is always the issue of water possibly leaking where they join. I use the ReptiBreeze substrate trays with plastic tarp below and above to prevent leakage. My set ups are all bioactive though. I suppose silicone or Great Stuff foam could be used for that spot.
If I had planned things better and/or had more experience with building stuff, I could have had created perfect little castles, but again, it all works and that’s all that matters.


This will probably be a big help to you.
https://chameleonacademy.com/double-wide-chameleon-cage-project/
Here’s a couple that I’ve done. Yes, they’re cheap ReptiBreezes that I bought on sale.
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