Not designed for terrariums that contains water (with the exception of a water dish) such as an aquatic turtle habitat. Choose a heat mat that is approximately a third to half the size of your herp's habitat.
Penn Plax Reptology Life Science Habitat Heat Mat for Reptiles, Mini
Size: Mini
Dimensions: 4" L X 5" W
Watts: 4 Watts
Penn Plax Reptology Life Science Habitat Heat Mat for Reptiles, Medium
Size: Medium
Dimensions: 10" L X 11" W
Watts: 16 Watts
Penn Plax Reptology Life Science Habitat Heat Mat for Reptiles, Large
Size: Large
Dimensions: 11" L X 17" W
Watts: 25 Watts
Penn Plax Reptology Life Science Habitat Heat Mat for Reptiles, Small
Size: Small
Dimensions: 8" L X 8" W
Watts: 8 Watts