Give your pet the extra heat it needs. Fluker's Heat Mat's durable construction provides uniform, evenly distributed heat. Easy to use and safe for all reptiles and amphibians. For use outside your pet's enclosure. Can be mounted under or on side of your pet's enclosure. **If mounted below enclosure, make sure there is only a thin layer of substrate in tank and there is proper ventilation to prevent heat buildup which can damage your enclosure or create a fire hazard. Side mounting is recommended for enclosures with no bottom ventiliation and/or thick or heavy substrate.**