The 14x21 Flush Mount Black Beauty Sweeter Heater is safe, energy efficient, indestructible, and reliable. This is an infrared radiant heater, intended to heat the animal, bird or reptile underneath; however, it will trap ambient heat within enclosures. Ideal to use with a thermostat control within a reptile enclosure.  It's not a space heater and will not feel hot like one. Designed to be mounted flush to a wall or ceiling and comes with brackets and screws for easy mounting. There are no hot spots, develops a uniform heat pattern, and has a 3-year warranty. The surface temperature of the lens will range from a safe 160-180 degrees (F) of radiant heat and will not burn your animals.  For additional safety measures, the Sweeter Heater has an internal snap action thermal control to insure heaters turns off automatically when heat is not allowed to escape. The 14x21 model has almost 300 square inches of soft uniform infrared heat.  Sweeter Heaters are ideal for use in chick brooders, chicken coops, whelping areas, goats, kennel runs, farrowing units, dog and cat houses/crates, rabbits, bees, and bird and reptile cages. The SWEETER HEATER develops a uniform heat pattern, it uses less power to operate, it is unbreakable, it is sealed so it can be washed. Average weekly energy cost to run 24x7 is $3.02.