Purchasing & Auxiliary Services

142	BUILDERS & CONSTRUCTION CONTRACTORS
142-02	ACOUSTICAL CONTRACTORS-CEILINGS & WALLS
142-05	CARPENTRY
142-07	CAULKING CONTRACTORS
142-11	CONCRETE CONTRACTORS
142-14	DEMOLITION CONTRACTORS
142-17	DRYWALL, LATHING, & PLASTERING CONTRACTORS
142-20	ELECTRICAL CONTRACTORS
142-23	EXCAVATING & GRADING CONTRACTORS
142-25	FENCING CONTRACTORS
142-26	FLOORING CONTRACTORS
142-32	GENERAL BUILDING CONTRACTORS-BUILDING REPAIR
142-35	GLASS & GLAZING CONTRACTORS
142-41	HEATING & AIR CONDITIONING CONTRACTORS
142-47	INSULATION CONTRACTORS
142-50	MASONRY CONTRACTORS
142-53	MECHANICAL CONTRACTORS
142-56	PAINTING & PAPER HANGING CONTRACTORS
142-58	PAVING CONTRACTORS
142-59	PLUMBING CONTRACTORS
142-61	RECREATIONAL FACILITIES CONTRACTORS
142-62	ROOFING & SHEETMETAL CONTRACTORS
142-70	SIDING CONTRACTORS
142-74	WATERPROOFING CONTRACTORS
142-80	WINDOW & DOOR INSTALLATION & REPAIR
144	BUILDER’S & CONSTRUCTION SUPPLIES: DOORS, WINDOWS, & RELATED SUPPLIES
144-12	DOORS AND PARTS, NON-AUTOMATIC
144-14	DOORS AND PARTS, AUTOMATIC
144-32	GLASS, HEAT-TEMPERED, PLATE, SAFETY LAMINATED, WINDOW
144-70	WINDOWS AND FRAMES