I thought about that also.. But at that time I was looking at the radiant heat panels as a source of heat. With dividing it I would had to have bought a smaller RHP then another when I opened up the cage to full size. So I scrapped that idea.. I even had a bunch of Melamine shelving I was going to build an enclosure out of.. That's why I was looking at RHP, due to the thickness of the shelving..
I've been round and round with this trying to listen to all the Opinions.. I finally got pissed and bought a cheap 10 gal. tank that already had the sliding screen top.. Just like others have used for years and years. I'm not absolutely clueless that using one is a little more work, that doesn't bother me at all. I'm disabled with a bad hip and am on Disability, so I have lots of time on my hands.