Power Blanket introduces drum heater technology that is lightweight, durable, and low-energy and provides an even heat distribution. The drum heater wraps around any 55-, 30- or 5-gallon drum and plugs into any standard 20-amp outlet. The heater is available in five temperatures with a built-in thermostat, applying safe, even and consistent heat to materials including water, resins, mortar or cement mixes.