Electrotherm (India) offers Steel Frame Furnaces. It comes with the following features: top-block assembly; heavily extruded rectangular section coil ensures highest efficiency, strength and rigidity; yoke is made out of CRGO steel bolted through MS channel to support the power coil, guide the stray magnetic flux outside the coil and improve coil power factor; top and bottom cooling coils evenly distribute temperature gradients through out the refractory to prevent overheating and extend refractory life; bottom block assembly; lining failure detection probe; former; and fume extraction ring (optional).