Ad from "The Manufacturer and Builder" 1893
Interior conduit & Insulation Co. New York Factory 527-537 West Thirty-fourth street; General Offices: 16 and 18 Broad street. Catalogue and Price-List.
This company is engaged in the manufacture of an interior conduit intended for the use in buildings in which electric lighting is installed. The conduits are light, water-proofed and insulated, the purpose thereof being to enclose the wires therein throught the entire lenght of the system within the building. The protection of the wires from accidents of every description by the use of this system, is too obvious to require more than mention. The conduits have come to be looked upon very favourably by the electric companies and by the fire underwriters, and are coming extensively into use.
