Feature: 1. WITH ELASTOMERIC SPRINGS: Elastomeric springs are used to attach silicone heaters to drums of various diameters. Spring stretches to about 3in 2. SUITABLE FOR YOUR APPLICATION: 250mmx1140mm flexible heating pad can be used in 50L oil drum, suitable for industrial application, not people own use 3. WIDE APPLICATION: Drum heater is suitable for propane tanks, pipes, valves, instruments, tanks, and drums, very versatile 4. USEFUL AND PRACTICAL: Heating and insulating metal drums, pipes, water tanks in non explosive gas applications, auxiliary heating of air conditioners 5. MAINTAIN CONSTANT TEMPERATURE: Comes with a thermostat that can heat up to 30-150℃, once the silicone heating pad reaches the desired temperature, it will reduce power consumption and maintain the selected temperature (±-3℃) Specification: Item Type: Drum Heater Material: Silicone Product Size: Approx. 250 x 1140mm / 9.84 x 44.88in Power: 1200w Temperature Range: 30-150℃ Applicable Oil Drum Size: Approx. 385mm / 15.16in diameter x 480mm / 18.9in. Package List: 1 x Drum Heater Note: Please pay attention to your own oil drum size and product size when purchasing.Please note that different batches of knob covers have different silk prints, and make sure you will not mind before ordering.