| 031.10 Air Purifiers, Accessories and Supplies |
| 031.11 Blowers: Industrial Types |
| 031.13 Chillers, Heat Exchangers and Receivers |
| 031.14 Chilled Water System, Portable |
| 031.15 Chilled Water Meter System |
| 031.16 Coatings and Sealants, Duct |
| 031.17 Coils: Chilled or Heated Water, and Direct Expansion |
| 031.18 Coil and Fan Units, Air Conditioning |
| 031.21 Compressors, Air Conditioning: Industrial Type, and Parts |
| 031.23 Condensing Units (For Air Conditioners) |
| 031.24 Controls, Cooling Tower Water Treatment: pH, Conductivity, Corrosion Sensors |
| 031.25 Controls: Limit Switches, Relays, Thermostats, Gas Valves, etc. |
| 031.26 Control Systems: Complete (For Automatic Temperature Control) |
| 031.27 Cooling Tower Water Treatment: Non-chemical Ozone, Centrifugal Separators, Magnetic Descaling Equip. (See Class 885 for Chemical Types) |
| 031.28 Cooling Towers: Forced Air, Gravity, etc. |
| 031.29 Dampers, Motorized |
| 031.30 Dehumidifiers and Humidifiers |
| 031.31 Duct Cleaning Equipment, Air |
| 031.32 Duct, Prefabricated (Flexible or Rigid): Glass Fiber, Plastic, etc. |
| 031.33 Duct, Fabricated, Metal |
| 031.34 Dust Collectors, Industrial Type |
| 031.36 Electronic Air Cleaners, Electrostatic Precipitators, Ozonators, Accessories, and Parts |
| 031.38 Evaporative Coolers |
| 031.40 Fans, Industrial Types: Attic, Exhaust, Forced Draft, etc. (Including Fan Blades and Fan Parts) |
| 031.41 Fans, Room Type, Ceiling and Portable Type (Stationary and Oscillating) |
| 031.43 Filter Coating, Adhesive, Coil Cleaners, Degreasing Solvents, etc. |
| 031.44 Filters, Air Conditioning/Furnace (Permanent Type) |
| 031.45 Filters, Air Conditioning/Furnace (Disposable Types) |
| 031.46 Filters and Filter Media, Evaporative Cooler |
| 031.49 Filter Frames, Metal |
| 031.53 Grilles, Diffusers, Registers, etc. |
| 031.56 Heat Pumps |
| 031.65 Heating Elements, Electric |
| 031.67 HVAC Equipment, Accessories and Supplies (Not Otherwise Classified) |
| 031.78 Roof Ventilators, Power Driven (Including Recycled Types) |
| 031.89 Thermometers and Gauges |
| 031.95 Ventilation Equipment and Systems (See 031-78, 79 for Roof Ventilators) |
| 031.96 Vent Pipes, Fittings, and Accessories |
| 045.06 Appliances, Small, Electric (Not Otherwise Classified) |
| 045.18 Cleaners and Sweepers, Hand-Operated |
| 045.20 Coffeemakers, All Types (Household) |
| 045.24 Dishwashers |
| 045.30 Disposal Units |
| 045.50 Kitchen Units, Compact, Complete |
| 045.52 Ovens, Microwave and Convection (Household) |
| 045.54 Ranges, Stove Tops, and Ovens, Electric |
| 280.80 Underground Cables and Wires, Solid and Stranded, Single and Multiconductor, Aluminum and Copper: Types UF, URD, USE, XLP, etc. |
| 280.95 Wire and Cable (Not Otherwise Classified) |
| 285.09 Cabinets, Electrical Service Entrance |
| 285.10 Cable Accessories: Clamps, Clasps, Clips, Closures, Reels, Splices, Wrappings, etc. |
| 285.11 Capacitors, Motor Starting and Running |
| 285.14 Circuit Breakers, Load Centers, Boxes, and Panelboards |
| 285.18 Conduit and Fittings, Cast Iron and Malleable Iron |
| 285.19 Conduit and Fittings, Plastic/Pvc |
| 285.21 Conduit and Fittings, Aluminum |
| 285.23 Conduit Fittings, Steel: Boxes, Bushings, Clamps, Connectors, Covers, Locknuts, Straps, etc. |
| 285.24 Conduit and Fittings, Brass, Bronze, and Copper |
| 285.26 Conduit, Steel |
| 285.34 Fuses, Fuse Blocks and Holders, Links, etc. |
| 285.39 Generators, Stationary Type (Not Automotive) |
| 285.40 Grounding Rods and Fittings |
| 285.52 Lamps: Portable, Shop, and Work Site |
| 285.54 Lighting Fixtures, Indoor: All Kinds and Parts (Including Lampholders and Recycled Types) |
| 285.56 Lighting Fixtures, Outdoor: Floodlights, Spotlights, Yard Lights, and all other Weatherproof Fixtures (Except Streetlights) (Including Recycled Types) |
| 285.64 Motor Controllers, Contactors, Push Button Stations, Relays, Safety Switches, Starters, Coils and Brushes |
| 285.67 Power Systems Switchgears and Related Accessories |
| 285.68 Motors and Parts, Fractional H.P. Electric (Incl. Remanufactured) |
| 285.69 Misc. Electrical Equipment and Supplies (Not Otherwise Classified) |
| 285.70 Motors and Parts, Integral H.P., Single Phase, Electric (Incl. Remanufactured) |
| 285.71 Motors and Parts, Integral H.P., Three Phase, Electric (Incl. Remanufactured) |
| 285.74 Pole Line Hardware: Anchors, Arms, Bolts, Braces, Brackets, Clevises, Connections, Insulators, Plates, Pole Steps, Racks, Rods, Shackles, Straps, Thimbles, Washers, etc. (See 765-95 for Wire Rope Accessories) |
| 285.76 Street and Highway Lighting Luminaires, Accessories and Parts |
| 285.78 Structural Supports and Racks, Mechanical Type: Angles, Braces, Brackets, Channels, Clips, Fittings, Spring-Nuts, etc. |
| 285.79 Switches, Parts and Accessories (Miscellaneous) |
| 285.80 Street Light Poles and Standards |
| 285.81 Tools, Electricians' and Lineman's (Including Cable Fault Locators, Cable Pullers, Press Boosters and Heads, Hotsticks, Testing Equip. Wire Crimping Tools, etc.) (See 285-30 for Dielectric Tools) |
| 285.84 Transformers, Transmission Line Type |
| 285.85 Transformers, Dry Type, For Indoor or Outdoor Applications |
| 285.86 Transformers, Power Distribution (Including Fluid Filled, Pad and Pole Mount) |
| 285.87 Transformers, Power, Electric Sub-Station |
| 285.88 Tube Guard and Safety Sleeves (For Fluorescent Fixtures) |
| 285.89 Unilets |
| 420.04 Auditorium, Stadium, Team Seating Furniture and Portable Bleachers |
| 420.08 Cafeteria Furniture, Chairs and Tables (Incl. Stacking Types) |
| 420.11 Casework and Cabinets, Custom, All Types |
| 420.13 Children's Furniture (Incl. Stackable Types) (See 41054 for Hospital Types) |
| 420.24 Folding Chairs, Tables, and Chair Trucks, Metal |
| 420.44 Institutional Furniture, All Types |
| 420.48 Library Shelving, Metal |
| 420.52 Library Shelving, Wood |
| 420.63 Lounge Furniture, Outdoor: Fiberglass, Plastic, Aluminum, etc. (Incl. Stacking Types) |
| 420.84 Schoolroom Furniture, Metal: Cabinets, Chairs, Desks, etc. |
| 420.86 Schoolroom Furniture; Plastic, Polypropylene, Fiberglass Type: Cabinets, Chairs, Desks, etc. (Incl. Stacking Types) |
| 420.88 Schoolroom Furniture, Wood: Cabinets, Chairs, Desks, etc. |
| 420.96 Work Benches, Shop Desks and Tables |
| 445.06 Bits, Dies, Drivers, Reamers, Taps, etc. (For Hand Tools, Powered and Non-Powered) |
| 445.12 Caulking Guns, Putty Knives, Scrapers, etc. |
| 450.01 Adhesives and Sealants (Not Otherwise Classified) |
| 450.06 Batteries, Dry Cell (Except Communications Radio and Electronic) |
| 450.07 Battery Chargers |
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