Galvanized rigid conduit. Ideal for jobs that require the physical protection that only the thickest walls can provide. Fabricated of hot-dipped galvanized steel inside and out, rigid metal conduit (RMC) is tough enough for use in outdoor applications, energy and manufacturing plants, and corrosive environments. Plus, it is easy to cut, bend, and thread on the job. Certification: UL-6,ANSI C80.1,NEC ARTICLE 344, NFPA 70: NEC250.118(2).