Possible NAICS Codes
238220 – Plumbing, Heating, and Air-Conditioning Contractors
236220 – Commercial and Institutional Building Construction
236210 – Industrial Building Construction
237130 – Power and Communication Line and Related Structures Construction
221330 – Steam and Air-Conditioning Supply
237110 – Water and Sewer Line and Related Structures Construction
238150 – Glass and Glazing Contractors
238990 – All Other Specialty Trade Contractors