Morse Pail Heaters are ideal for heating the contents of 5-gallon plastic or metal pails. Each heater is 4" wide and made of fiberglass-reinforced silicone rubber. Pail heaters are attached using a spring and hook, and feature a thermostat which sets the temperature between 50° and 425°F for metal pails, or between 5° and 160°F for plastic pails. Heaters must be positioned below the level of liquid in the pail to avoid damaging the heater. Models ending with -115 run on 115V volt power and have a 6' cord and plug, while models ending with -230 run on 230V power and have a 6' cord without a plug. Morse Pail Heaters must not be used for pails containing flammable materials or in explosion hazard areas.