EE-2487 - EFCO (Electric Furnace Co.) : 84" W x 10" H x 33' L, Gas, 500°F EE-3073 - Casso-Solar Corporation : 7' W x 20" H x 10' L, Electric, 1200 °F EE-3193 - Standard Fuel & Engineering (S.F.E.) : 39" W x 10" H x 24' L Elec, 600 °F EE-3194 - Standard Fuel & Engineering (S.F.E.) : 41" W x 12" H x 18' L Elec, 600 °F