| 146 | BUILDER’S & CONSTRUCTION SUPPLIES: ELECTRICAL, WIRING, CABLES, & RELATED MATERIALS |
| 146-08 | CABLES AND WIRES, BUILDING |
| 146-16 | CABLES AND WIRES, TELEPHONE |
| 146-18 | CABLES AND WIRES, UNDERGROUND & WEATHERPROOF SOLID & STRANDS |
| 146-24 | CIRCUIT BREAKERS, LOAD CENTERS, AND PANEL BOARDS |
| 146-26 | CONDUIT AND FITTINGS |
| 146-42 | FUSES, FUSE BLOCKS, HOLDERS, ETC |
| 146-54 | POWER SUPPLIES, DATA PROCESSING COMPUTER ROOM |
| 146-56 | POWER SUPPLIES, OTHER THAN DATA PROCESSING COMPUTER ROOM |
| 146-62 | TOOLS, ELECTRICIANS AND LINEMAN’S |
| 146-64 | TRANSFORMERS |
| 146-72 | WIRE MOLDING, RACEWAYS AND DEVICES |
| 148 | BUILDER’S & CONSTRUCTION SUPPLIES: HEATING, VENTILATING, AIR CONDITIONING, & SUPPLIES |
| 148-08 | AIR CONDITIONING AND HEATING UNITS AND PARTS |
| 148-15 | BOILERS, HVAC |
| 148-22 | CHILLERS, HEAT EXCHANGERS & RECEIVERS, HVAC |
| 148-27 | COMPRESSORS, AIR CONDITIONING |
| 148-32 | CONTROL SYSTEMS: COMPLETE |
| 148-33 | CONTROLS: ALL TYPES, HVAC |
| 148-55 | FILTERS AND FILTER MEDIA |
| 148-66 | HAND TOOLS, AIR CONDITIONING & HEATING SERVICE TYPE |
| 148-68 | HEATERS, ALL TYPES |
| 148-78 | PUMPS |
| 148-85 | TESTING AND RECORDING INSTRUMENTS, HVAC |
| 148-86 | THERMOMETERS AND GAUGES, HVAC |
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