So I'm in the planning phase of a CWD vivarium. The plan is to have 6' wide, 6' high, and 2' deep. However because something that big would be impossible to move, I'm building it into two sections, 6' x 3' x 2 which will be bolted together and have weather stripping to keep humidity and temps in. My biggest conundrum is how to do the windows. I'd have to have two separate windows for each module, which means no sliding glass doors across the whole thing. I was thinking of just getting a double-hung house window so that I'd have two slides of glass that I can put up or down (or out completely for cleaning) so I should have good access inside the viv. Plus they should be easy to install and keep humidity and temps well. Has anyone used normal house windows in a viv before? Is there any other (cheaper) alternatives? The one reason I like the modular design is so when I get a mate for my CWD, I can easily make another module and bolt it on to extend the size.