SPECIFICATIONS Wattage: 350 to 1500 watts Power: 120 or 240 Vac Watt Density: 20 - 86 W/in2 Sheath Material: Type TM has a high watt density copper sheath, ideal for water heating applications. Type TMO has a lower watt density steel sheath for oil heating applications. Screw Plug: Type TM has a 1"brass screw plug. Type TMO has 1" steel screw plug.
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