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<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>6. COMMITMENTS AND CONTINGENCIES</b>
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<div align="left" style="font-size: 10pt; margin-top: 6pt">     WESCO is a co-defendant in a lawsuit filed in a state court in Indiana in which a customer
alleges that WESCO sold defective products manufactured or remanufactured by others and is seeking
monetary damages in the amount of approximately $50 million, as the original amount sought of
approximately $52 million was modified to approximately $47 million in written responses to
discovery requests. The discovery process is on-going in this matter. WESCO has denied any
liability, believes that it has meritorious defenses and intends to vigorously defend itself
against these allegations. Accordingly, no liability is recorded for this matter as of March 31,
2011.
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