3M
ABB
Abolite
Adalet-PLM
Adjusta-Post
Advance
Aero-Motive
Aerovox
Aetna
AFC
Airey Thompson
Airmaster
Aitken Products
AIW
Alcan
Alcoa Fujikura
Alkco
Alliance
Allied Tube
ALP
Alpha
ALR
Alumax
Amercable
American Dryer
American Electric Lighting
American Fluorescent Group
American Louver
American Polywater
AMP
Amphenol
Amprobe
Anaconda
Anchor
Anderson
APC
Appleton
Architectural Area Lighting
Arlintgton
ASCO
Atlantic Scientific
Austin
AVO International
Bashlin
Bauer
Bega Lighting
Belden
Berk-Tek
BICC General Cable
BICC Pyrotenax Cable
Blackburn
B-Line
Bodine
Boston Insulated Wire
Brad Harrison
Brady USA
BrandRex
Bright Star
Broan
Buchanan
Burndy
Bussman
Cablec
Caddy
Cadweld
Can-Tex
Capri
Carlon
Carol
Carpenter
Cetco
Cerro
Champion Fiberglass
Chloride
Chromalox/ColeFlex
Chromatic Technologies
Clauss
Coleman
Columbia
Conduit Pipe Products
Condux
Cooper Lighting
Cooper Power Systems
Copperweld
Craftlite
Craftmade
 CRC Chemical
Crescent Lighting
Crompton/Modutec
Crouse-Hinds
Crouse-Hinds Lighting
Cutler-Hammer
Damac
Day-Brite
Dazor
Devine
Dinico
Dolphin Components
Dossert
Dual-Lite
E. C. Korns
Eagle Signal
Easyheat
Edison Price
Edwards
Elastimold
Electriflex
Electromode/Sentinel
Elliptipar
Emergilite
E-Mon
Encore
Enduro Fiberglass Systems
EPE
Erico
Ericson
Essex
Eurobex
Eveready
Exide
Fail-Safe
Fan-Brace
Fargo
Fasco
Federal Pacific
Federal Signal
Ferraz-Shawmut
Fiber Optic Network
Fiberware
Firex
Fluke
Forum
Fostoria
FSR
G&W
Gardner Bender
GE Lighting Systems
General Cable
Globe Strut
GMP
Great Lakes
Green Bull
Greenlee
Guth Lighting
Hadco Lighting
Halo Lighting
Hammond
Hartford Prospect
Hastings
Hazlux
Helix Hi-Temp
HH Fluorescent
Hilti
Howard Industries
Hubbell Electrical Products
Hubbell Ind. Controls
Hubbell Lighting
Hubbell Wiring Devices
Hytron
Ideal
Interlink
Intermatic
IPC
Isolite
Jefferson
Juno Lighting
K&S Metals
Keene Lighting
Kellems
Kenall
 Kerite
Kichler Lighting
Killark
Kim Lighting
Klein Tools
Kulka
Kurt Versen
Landis & GYR
Ledtronics
Lee
Leeson
Lem
Leviton
Lightolier
Linemaster
Litecontrol
Lithonia Lighting
Littlefuse
Louisville Ladder
LSI
Lumax
Lutron
MAC
Mag-Lite
Maple Chase
Mark
Markel
McGill
McGraw-Edison
Meltric
Merlin Gerin
Metallics
Metalux
MGM
Milbank
Milwaukee
Mineralac
Modicon
Moldcast
Mono Systems
Montrose
Moore-Lambert
Motorola
Mueller
Mulberry
Myers
Neer
Nehring
Neoray
Nordic
North Star
NSI/Polaris
NuTone
Ocal
Okonite
Olsun Electrics
Orbit Mfg. Co.
Osram/Sylvania
O-Z Gedney
P.W. Southern
Panduit
Pass & Seymour
Patton
Peerless Lighting
PermaCote
Philips
Phoenix Products
Picoma
Pirelli
Porcelain Products
Powercon
Precision
Prescolite
Progress
Prudential Lighting
Pyle National
Pyrotenax
QMark/Marley
Quabbin
Quazite
Raco
Rawl
Raychem
Ray-O-Vac
Raywall/TPI
Regent Lighting
 Republic Conduit
Ripley
Rittal/Electromate
Robertson Transformer
Robroy/Stahlin
Rockbestos
Royal Technologies
Russell Stoll
S&C
S.L. Waber
Salisbury
Scepter/Canron
Seatek
Selecta Switch
Shamrock
Shat-R-Shield
Simkar
Sola/Hevi-Duty
Southwire/Senator
Spaulding
Speco Technologies
Spero
SPI Lighting
SPL
Sprague
Spring City
Square D
Steel City
Steelflex
Sternberg
Sterner
Stonco
Stream Lite
Superstrut
Suttle
Tamaqua
Taylor
Tech Lighting
Teledyne/Big Beam
Teledyne/Penn Union
Telemecanique
Thepitt
Thomas & Betts
Thomas Industries
Thomas Lighting
TJ Cope
Tork
TPI
Triboro
Tyton Industries
Unistrut
Unity
Universal Lighting Technologies
V.A.W.
Valmont
Venture
WAC Lighting
Walton
Watlow
Watt Stopper
Wiegmann
Westinghouse
West Penn
Wheatland
Whelen
WideLite
Wiremold
Woodhead
Zenith