| 126 / | HD | STOVES AND FURNACES | 
| * | DD | HEATERS {7} | 
| 263.01 | DF | .~ Chemical {3} | 
| 263.05 | DF | .~.~ Liquid in contact with solid (e.g., water and lime) {1} | 
| 263.06 | DF | .~.~.~ Including separate solid and liquid compartments {3} | 
| 263.09 |  | .~.~.~.~ Including means to rupture or open solid or liquid compartment |