| 334512 |
Humidistats (e.g., duct, skeleton, wall) manufacturing |
| 334512 |
Humidity controls, air-conditioning-type, manufacturing |
| 334512 |
Hydronic circulator control, automatic, manufacturing |
| 334512 |
Hydronic limit control manufacturing |
| 334512 |
Hydronic limit, pressure, and temperature controls, manufacturing |
| 334512 |
Ice bank controls manufacturing |
| 334512 |
Ice maker controls manufacturing |
| 334512 |
Ignition controls for gas appliances and furnaces, automatic, manufacturing |
| 334512 |
In-built thermostats, filled system and bimetal types, manufacturing |
| 334512 |
Incinerator control systems, residential and commercial-type, manufacturing |