PSC Z1BA Maintenance of Air Traffic Control Towers

Services
Federal Category 4.4: Facilities & Construction Facility Related Services

Possible NAICS Codes
236220 – Commercial and Institutional Building Construction
238220 – Plumbing, Heating, and Air-Conditioning Contractors
238290 – Other Building Equipment Contractors
238990 – All Other Specialty Trade Contractors
238160 – Roofing Contractors
238210 – Electrical Contractors and Other Wiring Installation Contractors
561621 – Security Systems Services (except Locksmiths)
561790 – Other Services to Buildings and Dwellings
238150 – Glass and Glazing Contractors
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance