Subgroup
| Subgroup | Description | Note |
|---|---|---|
| 001 | HEATING AND VENTILATION | ---- |
| Sa catalog | Description | Note |
| 55704 | TUNNEL COVERING,HEATER CASE,AND HOUSING | Codes: 306 |
| Subgroup | Description | Note |
|---|---|---|
| 001 | HEATING AND VENTILATION | ---- |
| Sa catalog | Description | Note |
| 55704 | TUNNEL COVERING,HEATER CASE,AND HOUSING | Codes: 306 |