FNN1015: Features: -Submersible water tank heater-Solid aluminum heating unit-Completely automatic-Tested under zero temperatures-Sealed thermostat saves current by shutting off when required water temperature is reached resulting in inexpensive operation-Waterproof cord connection-Heavy duty, long life, 6' cord, with 3 prong grounding type plug-Recommended especially for stock tanks in protected or indoor areas-Fins keep unit off the bottom without welded wire supports or side clamps-Heavy duty automatic thermostat sealed in epoxy. Specifications: -1500W-120 volts. Dimensions: -Dimensions: 4.25" H x 9.5" W x 10" D.