Exhibit 32.2
CERTIFICATION FURNISHED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
(18 U.S.C. SECTION 1350)
In connection with the Quarterly Report of Encore Wire Corporation (the “Company”) on Form 10-Q for
the quarterly period ended March 31, 2007, as filed with the Securities and Exchange Commission on
the date hereof (the “Report”), I, Frank J. Bilban, Vice-President—Finance, Chief Financial
Officer, Treasurer and Secretary of the Company, certify pursuant to 18 U.S.C. 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:
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The Report fully complies with the requirements of Section
13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and |
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The information contained in the Report fairly presents, in
all material respects, the financial condition and results of operations of
the Company. |
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Date: May 9, 2007 |
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/s/ FRANK J. BILBAN
Frank J. Bilban
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Vice President — Finance, Chief Financial
Officer, Treasurer and Secretary |
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