For low temperature to 40°C, suitable for light duty applications of heating standard steel drums and containers. Ideal for all viscous chemicals. The units are flexible and can be wrapped around the drum simply and quickly. Fixing is by adjustable spring and hook. Use only on undented drums, vertically mounted and keep below the level of liquid. The Electro-Flex heater should be used for products that require heating in winter months only. If products require heating all seasons, refer to heavy duty type heaters.