Although not immersible, this heater may be used under metal buckets, waterers, fountains, or inside various enclosures. Made of heavy-gauge steel with an attractive, baked-on enamel finish. Heater has an adjustable broad-range, replaceable thermostat. Measures 10" x 3" x 3". Cord is 4" long. 120V, 500 watts. Range: 40° F to 150° F. Lock N’ Dry compatible.