NIGP 03133: Duct, Fabricated, Metal

NIGP 03133 Duct, Fabricated, Metal (Item) covers fabricated metal ductwork and related air-distribution accessories installed as part of building systems retrofit and new construction. State and local governments procure this under building automation, HVAC replacement, and facility renovation programs, often bundled with dampers, terminal boxes, air handling units, and smoke control system components. Issuing bodies include county facilities departments, municipal utilities, and school district capital programs. Work is typically specified within larger mechanical systems projects rather than as standalone duct procurement.

Activity clusters in Florida and Georgia, with recent examples including Orange County, Florida's $2.89 million Corrections Booking and Release Center sealed-bid solicitation (Y26718, due October 20, 2026) requiring replacement of fabricated metal ducts, smoke control system retrofits, fire dampers, and terminal box installation as part of a building automation system overhaul at the county corrections facility, and the Stephens County Board of Education's RFP for districtwide renovations and modifications in Toccoa, Georgia (PE55598NONST2027000000002, due October 9, 2026) encompassing HVAC improvements including ductwork modifications across multiple school buildings within an estimated $20 million to $26 million construction budget. The City of Charlotte issued an RFP for boiler and chiller maintenance services (26920271769, due October 15, 2026) that references HVAC systems but focuses on mechanical service rather than duct fabrication. Service requirements vary; Orange County's solicitation mandates electronic submission via OpenGov, pre-bid attendance with site visit, and bonding equal to 10% of the estimated contract amount, while school district and municipal projects typically follow standard IFB or RFP protocols with standard bonding and insurance requirements.