The power reptile heating pad is specifically designed to be used on standard glass terrarium for reptiles, amphibian, small animals, or plant terrarium. Compare with other general heat pad in current market, our heat pad is made of a new heating film which inserted in the pad, providing the suitable temp equably in several minutes. Our power heaters range from 4 to 24 watts making them extremely economical in operate. It also can be used for thermostat and/or in conjunction with an additional heat source higher temperature species. Specifications: S : 4"x7" 4 watt — 1-5 Gallon M : 6"x8" 8 watt — 10-20 Gallon L : 8"x12" 16 watt — 30-40 Gallon XL : 8"x18" 24 watt — 50-60 Gallon Features: 1. Size: 8"x18" ; 24W; Length of cord: 6fts 2. 120V US voltage and Standard Plug and No adapter needed 3. Easy to clean and convenient to use 4. Provide quick warm and save energy 5. Waterproof and moisture proof designed 6.Keep reptile tank warm without any harm to your pets 7. With this pet heat mat, your pets will not need to worry about it would get cold. 8. Suitable for: turtles, snakes, lizards, Gekkonidae, small mammals, spider, crawler, etc. At room temperature 68°F(20°C), the surface temperature of the heat pad is about 83°F(28. 3°C). WARNING: Risk of Fire. Never mount the iPower® Reptile Heat Pad in a manner that would encapsulate heat. (i.e. mounting it on the bottom of a terrarium and then setting the terrarium directly on any type of table or the floor/carpet). Always use the enclosed rubber feet to elevate your terrarium thus allowing the heat to escape. If unsure of bottom mounting, the side mounting of the iPower® Reptile Heat Pad is the preferred application.