| 126 / | HD | STOVES AND FURNACES |
| * | DD | STOVES {3} |
| 58 | DF | .~ Heating {18} |
| * | DD | .~.~ Liquid or gaseous fuel {3} |
| 85 R | DF | .~.~.~ Gas {6} |
| 92 R | ![]() | .~.~.~.~ Incandescent fire grate {4} |
| 92 AC | DF | .~.~.~.~.~> Radiant |
| 92 A | DF | .~.~.~.~.~> Electric radiant |
| 92 B | DF | .~.~.~.~.~> Radiant with reflector |
| 92 C | DF | .~.~.~.~.~> Radiant enclosed by furnace shell |