An adjustable thermostat senses the container’s surface temperature to automatically control heat output.

FM approved, these heat sheets are safe for use in areas with infrequent exposure, such as from a spill or a ventilation system failure, to flammable gases, liquids, and dust.

Nonstandard-size containers are no problem—use the hook-and-loop closure to adjust these heaters to fit a range of diameters.

Keep your battery running at full power even when the temperature drops—these heaters warm batteries quickly without overheating them.