1 EXHIBIT 21 GRAYBAR ELECTRIC COMPANY, INC. LIST OF SUBSIDIARIES -------------------- Graybar Electric Company FSC, Inc., a Barbados corporation Graybar International, Inc., a Missouri corporation Graybar Financial Services, Inc., a Missouri corporation Graybar Electric de Mexico, S. de R.L. de C.V., a Mexican corporation Graybar Electric Limited, a Nova Scotia corporation Graybar Canada Limited, a Nova Scotia corporation Graybar Foundation, Inc., a Missouri corporation Graybar Services, Inc., an Illinois corporation Distribution Associates, Inc., a Missouri corporation Graybar Electric (Ontario) Limited, an Ontario corporation Graybar Business Services, Inc., a Missouri corporation Graybar Electric Canada Limited, a Nova Scotia corporation Graybar Commerce Corporation, a Delaware corporation Commonwealth Controls Corporation