Works great for my 8 foot tropical enclosure. Hot spot is set at 95 and it’s been consistent per the parameters of my thermostat (+\- 3 degrees). I am concerned about the metal that is exposed, though. Other heating panels are fully covered so there is no exposed metal but this one is not. Of the 18x17 sides, the side against the roof of the enclosure isn’t covered (perfectly fine) the side that points down into the enclosure is (which is good) but of the 4, 5/8 inch sides only 2 of them are covered. I realize this is only a small amount of exposed metal but my arboreal snake that is constantly climbing can easily extend to it and burn himself potentially. I had to build a square rubber “cage” and put it around it to prevent this (similar concept to the circular cages around some heat emitter bulbs). This wouldn’t be a problem most likely with most animals though in my opinion.