Exhibit 32.2
Certification Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of
the Sarbanes-Oxley Act of 2002
    In connection with the Annual Report of Encore Wire Corporation (the “Company”) on Form 10-K for the annual period ended December 31, 2005, as filed with the Securities Exchange Commission on the date hereof (the “Report”), I, Frank J. Bilban, Vice President – Finance, Treasurer, Secretary and Chief Financial Officer of the Company, hereby 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:
  1)   The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and
 
  2)   The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
         
 
      ENCORE WIRE CORPORATION
 
       
Date: March 14, 2006
       
 
       
 
      /s/ FRANK J. BILBAN
     
 
      Frank J. Bilban
 
      Vice President – Finance, Treasurer, Secretary
 
      and Chief Financial Officer

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