I have made inexpensive enclosures out of plastic tubs, that I turned on it's side, and face framed a door on it.
Then I put flexwatt on one side of the bottom, and cut a hole in the top, srewed a small piece of plywood
with a hole the size on my heat lamp to the top, put mesh on the wood to hold the heat lamp. This makes a very functional,
and inexpensive pvc enclosure. And these tubs come in many sizes, depending on how big your animal is.
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