These ultra flat heat mats work great under small to medium indoor enclosures to create a warm spot underneath a small part of the enclosure. We use them under the enclosures, underneath hideboxes that are moistened, to create a nice "humid hide" area. These pads create a temperature about 20 degrees above the room temperature they're in, and will not burn your animals.
Small 6" x 9" - 8 Watts