3M A.W.Sperry Allied Moulding Prod. American Electric Amprobe Inst. AMS Lenox Arrow-Hart B-Line BRK Electronics Broan Mfg. Bussman Fuse Butler-Ventamatic Caddy Cadweld Carlon Carol Cable Chatham Brass Chelsea Ventilation Concord Fans Conduit (PVC, IMC, EMT) Conduit Fittings CRC Chemicals Day-Brite Lighting Dual-Lite Eagle Mfg. Easy-Heat

G.S. Edwards Elastimold Electric-Aire Emergilite Erico Fasco Gould Shawmut Greenlee Ground Rod & Fittings Hubbell Lighting Hubbell Wiring Hybernetics Ideal Mfg. Co. Intermatic Juno Kellems Kichler Lighting Killark Electric Kindorf Klein Tools Lambro Landis & GYR Litchfield Ind. Lutron Lynn Ladders Magnetek Markel Products

Midwest Electric Mulberry Metal Osram-Sylvania O.Z. Gedney Philips Lighting Raco Mfg. Rawl Plug Regal Regent Lighting Saf-T-Brace Scotts Lighting Sealtite & Fittings Seatek Select-A-Switch SEPCO Simkar Square D Sunray Taymac Theil Tool Timemark W.F.Harris Wiremold Co. Wire (RX, UF, THHN) Daniel Woodhead World Dryer