I ordered the 48x24 cage with flexwatt. It seems like a really good deal for the money. I skimped on the lock, so hopefully that's ok. I won't have the snakes for a few months. I plan on ordering a thermostat next. Are there any that will fail closed? That is in the event of a problem, it will close the circuit? I'm going to love shopping for the snakes while I get everything ready and test out the cage.