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   &lt;div align="left" style="font-size: 10pt; margin-top: 12pt"&gt;&lt;b&gt;5. REVOLVING CREDIT FACILTY&lt;/b&gt;
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   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;At June&amp;#160;30, 2010, the aggregate borrowing capacity under the revolving credit facility was
   $375&amp;#160;million. The revolving credit facility consists of two separate sub-facilities: (i)&amp;#160;a U.S.
   sub-facility and (ii)&amp;#160;a Canadian sub-facility and includes a letter of credit sub-limit of up to
   $55&amp;#160;million. The facility matures on November&amp;#160;1, 2013 and is collateralized by the inventory of
   WESCO Distribution, Inc. (&amp;#8220;WESCO Distribution&amp;#8221;) and the inventory and accounts receivable of WESCO
   Distribution Canada, L.P. WESCO Distribution&amp;#8217;s obligations under the revolving credit facility have
   been guaranteed by WESCO International, Inc. (&amp;#8220;WESCO International&amp;#8221;) and by certain of WESCO
   Distribution&amp;#8217;s subsidiaries.
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   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;On February&amp;#160;19, 2010, WESCO Distribution, along with certain of its subsidiaries, entered into
   a Limited Consent and Amendment No.&amp;#160;4 (the &amp;#8220;Amendment&amp;#8221;) to its Third Amended and Restated Revolving
   Credit Agreement, dated November&amp;#160;1, 2006 (the &amp;#8220;Agreement&amp;#8221;). The Amendment permits WESCO to
   complete certain legal entity restructuring actions, issue additional surety bonds and invest
   additional resources in foreign subsidiaries. In addition, the amendment enhances WESCO&amp;#8217;s hedging
   capacities.
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   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;Pursuant to the terms of the Amendment, WESCO agreed to modify the Applicable Margins (as
   defined in the Agreement) paid to the lenders on borrowings and letters of credit. Availability
   under the facility is limited to the amount of eligible U.S. and Canadian inventory and Canadian
   receivables applied against certain advance rates. Depending upon the amount of excess availability
   under the facility, interest will be calculated at LIBOR plus a margin that ranges between 2.25%
   and 2.875% or at the Index Rate (prime rate published by the Wall Street Journal) plus a margin
   that ranges between 1.00% and 1.625%. This change represented a 1.125% to 1.25% adjustment in
   borrowing margin over the previous rates. The fee for unused capacity associated with the facility
   was not changed and will range between 0.25% and 0.375%.
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   &lt;div align="left" style="font-size: 10pt; margin-top: 6pt"&gt;&amp;#160;&amp;#160;&amp;#160;&amp;#160;&amp;#160;As long as the average daily excess availability for both the preceding and projected
   succeeding 90-day period is greater than $50&amp;#160;million, WESCO would be permitted to make acquisitions
   and repurchase outstanding public stock and bonds. The above permitted transactions would also be
   allowed if such excess availability is between $25&amp;#160;million and $50&amp;#160;million and WESCO&amp;#8217;s fixed charge
   coverage ratio, as defined by Agreement, is at least 1.25 to 1.0 after taking into consideration
   the permitted transaction. Additionally, if excess availability under the revolving credit facility
   is less than $60&amp;#160;million, then WESCO must maintain a fixed charge coverage ratio of 1.1 to 1.0. At
   June&amp;#160;30, 2010, WESCO had $28.0&amp;#160;million outstanding under the facility.
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      <ElementReferences>Reference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher SEC
 -Name Regulation S-X (SX)
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 -Section 08
 -Paragraph f
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
 -Publisher SEC
 -Name Regulation S-X (SX)
 -Number 210
 -Section 02
 -Paragraph 19, 22
 -Article 5

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