These are thin metal sheath heaters hinged for ease of opening . These are further provided with a spring to hold them tight on the drum. Each heater is provided with a 3 meter long flexible cord. Although these are quite strong but these have to be handled carefully to avoid damage. These are low cost compared to Jacket type drum heaters.

These are thin metal sheath heaters hinged for ease of opening . These are further provided with a spring to hold them tight on the drum. Each heater is provided with a 3 meter long flexible cord. Although these are quite strong but these have to be handled carefully to avoid damage. These are low cost compared to Jacket type drum heaters.