W-R-36D, FEDERAL SPECIFICATION: RACEWAYS AND FITTINGS, METALLIC, UNDERFLOOR (25 NOV 1983)

W-R-36D, FEDERAL SPECIFICATION: RACEWAYS AND FITTINGS, METALLIC, UNDERFLOOR (25 NOV 1983)., This specification covers metallic underfloor duct systems designed for use as raceways for the installation of wires and cables.