Zoo Med is junk. Below is a photo of the Zoo Med Repti Therm UTH after just one month of use. There was nothing resting on the pad, its was mounted to the back of an arboreal wooden enclosure with a thermostat set at 90-degrees!! Today I noticed the thermostat was reading 78, so I put my hand on the pad and it was cold. Upon closer inspection I found it had shorted out and burned a hold completely through the pad and into the wood. If you notice in the first photo, the product clearly reads "For use only with glass tanks. Not to be mounted on metal surfaces". OK, it does read glass only, but nowhere does it mention wood...and I've used Flex Watt tape on wooden enclosures with no issues, so I didn't see why this couldn't be used with wood. Well apparently it cannot, and I'm Goddamn lucky it didn't catch the enclosure on fire and burn my house down!! However, I believe the reason they recommend it only be used with glass tanks is because its a SHIT product that shorts out and can potentially catch wood on fire!! I will be ordering some Flex Watt tape tomorrow!!