The 11-9862 is an insulated jacket manufactured by Kuhlmann Electro-Heat. This tool is designed to be utilized with a wide selection of drum heaters.
This tool may be fitted after heating, in order to maintain the temperature for a long period of time when used with the silicone or nylon jacket side drum heater. When coupled with the base drum heater, it may also be fitted during the heating to decrease warm-up time and improve temperature rates.