Corporate Profile

2005 Annual Report and Form 10k

With sales of $4.4 billion in 2005, WESCO, incorporated in 1993, is a leading North American provider of electrical construction products and electrical and industrial maintenance, repair and operating supplies, commonly referred to as “MRO.” We believe we are the largest distributor in terms of sales in the estimated $74 billion* U.S. electrical wholesale distribution industry based upon published industry sources and our assessment of peer company 2005 sales. We believe we are also the largest provider of integrated supply services for MRO goods and services in the United States.

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ROY W. HALEY Chairman and Chief Executive Officer JOHN J. ENGEL Senior Vice President and Chief Operating Officer STEPHEN A. VAN OSS Senior Vice President and Chief Financial and Administrative Officer

  © 2006 WESCO International, Inc.