WESCO International, Inc. to Webcast Fourth Quarter and Full Year 2004 Results

Pittsburgh, Pennsylvania, January 20, 2005 – WESCO International, Inc. (NYSE: WCC) (“the Company”) will conduct a teleconference on February, 3, 2005 at 11 a.m. ET to discuss the Company's Fourth Quarter and Full Year 2004 results. The conference call will be webcast live over the Internet and can be accessed from the home page of www.wesco.com. A News Release announcing the results will be issued that morning in advance of the call.

A replay of the conference call may be accessed via WESCO's website from 1:00 PM ET February 3, 2005, thru midnight ET February 10, 2005 or by dialing 888-286-8010 or 617-801-6888. The confirmation code to access the call-in playback is 68720603.

WESCO International, Inc. (NYSE: WCC) is a publicly traded Fortune 500 holding company, headquartered in Pittsburgh, Pennsylvania, whose primary operating entity is WESCO Distribution, Inc. WESCO Distribution is a leading distributor of electrical construction products and electrical and industrial maintenance, repair and operating (MRO) supplies, and is the nation's largest provider of integrated supply services with 2003 annual product sales of approximately $3.3 billion. The Company employs approximately 5,350 people, maintains relationships with 24,000 suppliers, and serves more than 100,000 customers worldwide. Major markets include commercial and industrial firms, contractors, government agencies, educational institutions, telecommunications businesses and utilities. WESCO operates five fully automated distribution centers and approximately 350 full-service branches in North America and selected international markets, providing a local presence for area customers and a global network to serve multi-location businesses and multi-national corporations.