I own 4 of them. Love them. Hook em up to one Helix and you're ready to roll!! They are great and Rich is great to work with. Awesome price too! I have the belly heat. Funny thing: I have the Zilla hides for all my snakes and lots of them don't use them and prefer to crawl under the paper substrate. On a bit of a whim I ordered some of the small hides that Rich sells. Every single snake I offered them to no longer crawls under the paper but instead uses the hide. Well, my impromptu experiment led me to ordering all of my racks the small hides. So much money, you may think? Well, happy and secure snakes are good eaters, good breeders, and healthy!!!! Reptile Basics Rock!!