34440 - Sheet metal work (Miscellaneous)
34441 - Air-conditioning ducts & Stove pipe
3444121 - - Steel sheet metal air-conditioning ducts (incl Dust collection ducts)
3444123 - - Aluminum sheet metal air-conditioning ducts (incl Dust collection ducts)
3444127 - - Steel sheet metal stove pipe, Furnace smoke pipe & Elbows
3444129 - - Aluminum sheet metal stove pipe, Furnace smoke pipe & Elbows
3444199 - - Air-conditioning ducts & Stove pipe (Miscellaneous)
34442 - Culverts, Flumes, Irrigation pipes, etc.
3444213 - - Culverts, Flumes, Irrigation pipes, etc.: Steel
3444215 - - Culverts, Flumes, Irrigation pipes, etc.: Aluminum
3444219 - - Culverts, Flumes, Irrigation pipes, etc.: other Metals
3444299 - - Culverts, Flumes, Irrigation pipes, etc. (Miscellaneous)
34443 - Bins & Vats
3444311 - - Steel grain bins & Vats, excl drying floors, Fans & Heaters
3444313 - - Aluminum grain bins & Vats, excl drying floors, Fans & Heaters
3444314 - - Sheet metal grain bins & Vats, excl drying floors, Fans & Heaters (Steel & Aluminum)
3444321 - - Other Steel sheet metal bins & Vats, incl Feed storage
3444323 - - Other Aluminum sheet metal bins & Vats, incl Feed storage
3444324 - - Other Sheet metal bins & Vats, incl Feed storage bins & Sheet metal vats (Steel & Aluminum)
3444399 - - Sheet metal bins & Vats (Miscellaneous)
34444 - Metal roofing & Roof drainage equipment
3444411 - - Metal roofing: Steel, all types
3444417 - - Metal roofing: Aluminum & other Metals, all types
3444423 - - Roof drainage equipment + Eave troughs, etc.: Steel
3444429 - - Roof drainage equipment + Eave troughs, etc.: Aluminum
3444431 - - Roof drainage equipment + Eave troughs, etc.: all other Metals
3444499 - - Metal roofing & Roof drainage equipment (Miscellaneous)
34445 - Metal flooring & Siding
3444505 - - Fabricated metal flooring
3444516 - - Metal siding: Steel
3444517 - - Metal siding: Aluminum: Residential, (+ Mobile homes)
3444518 - - Metal siding: Aluminum: other (Commercial, Industrial, Farm buildings, etc.)
3444519 - - Metal siding: other Metals
3444599 - - Metal flooring & Siding (Miscellaneous)
34446 - Sheet metal work (General)
3444611 - - Cornices, Skylights, Ceiling domes, Copings & Gravel stops
3444615 - - Roof ventilators
3444621 - - Bins & Vats: Grain, excl drying floors, Fans, Heaters, etc.
3444625 - - Bins & Vats: other + Feed storage
3444632 - - Stove pipe & Furnace smoke pipe, Elbows, Ducts: Aluminum
3444634 - - Stove pipe & Furnace smoke pipe, Elbows, Ducts: Steel
3444636 - - Air conditioning ducts + Dust collecting ducts: Aluminum
3444637 - - Air conditioning ducts + Dust collecting ducts: Steel
3444642 - - Restaurant, Hotel & Kitchen sheet metal equipment, Table tops, Drainboard tops, etc.: Aluminum
3444644 - - Restaurant, Hotel & Kitchen sheet metal equipment, Table tops, Drainboard tops, etc.: Steel
3444646 - - Metal awning & Canopies, Carports & Patios, Assembled or Unassembled, Prefabricated types: Aluminum
3444647 - - Metal awning & Canopies, Carports & Patios, Assembled or Unassembled, Prefabricated types: Steel
3444651 - - Soffits, Fascia & Shutters, Aluminum
3444662 - - Sheet metal work (General): Steel
3444664 - - Sheet metal work (General): Aluminum
3444698 - - Sheet metal work of Metals (General) other than Steel or Aluminum
3444699 - - Sheet metal work (Miscellaneous)
34447 - Metal awnings, Canopies, Cornices & Soffits
3444721 - - Steel sheet metal awnings, Canopies, Carports & Patios
3444725 - - Aluminum sheet metal awnings, Canopies, Carports & Patios
3444731 - - Sheet metal cornices, Skylights, Domes & Copings (Steel & Aluminum)
3444741 - - Sheet metal soffits, Fascia & Shutters (Steel & Aluminum)
3444799 - - Metal awnings, Canopies, Cornices & Soffits (Miscellaneous)
34448 - Electronic enclosures
3444811 - - Steel sheet metal computer & Peripheral equipment enclosures
3444813 - - Aluminum sheet metal computer & Peripheral equipment enclosures
3444819 - - Other Sheet metal electronic enclosures (incl Machine & Motor housings, Panels & Guards) steel & Aluminum
3444899 - - Electronic enclosures (Miscellaneous)
34449 - Miscellaneous sheet metal work
3444931 - - Sheet metal roof ventilators
3444941 - - Sheet metal louvers & Dampers for Heating, Ventilation & Air-conditioning (Steel & Aluminum)
3444953 - - Steel restaurant & Hotel kitchen sheet metal equipment
3444955 - - Aluminum restaurant & Hotel kitchen sheet metal equipment
3444962 - - Other Steel sheet metal work
3444965 - - Other Aluminum sheet metal work
3444998 - - Other Sheet metal work (Metals other than Steel or Aluminum)
3444999 - - Other Sheet metal work (Miscellaneous)
3444XX0 - - Sheet metal work (Miscellaneous - Volume)
3444XX2 - - Sheet metal work (Miscellaneous - Speciality)