Wow! Didn't expect all the responses. Lots of great questions. We are using them for veileds, carpets, panthers, and and a few others. We use them mostly for egg laying as it is very easy to disassemble and fits snug so that we don't have to worry about enclosures shifting. We are using compact uv. Two lights will fit underneath but we prefer regulating room temperatures. You can also clamp the heat lamp outside of the enclosure on the lip of the top. All the cut edges are dull so we don't get anyone stuck. We cup feed which makes it really easy.