Exhibit 32.2
CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO
18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION
906 OF THE SARBANES-OXLEY ACT OF 2002
Pursuant to 18 U.S.C Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, Chapter 63 of Title 18, United States Code), I, John B. Bartlett, Chief Financial Officer of UniFirst Corporation (the “Company”), do hereby certify, to the best of my knowledge, that:
| (1) | The Company’s Quarterly Report on Form 10-Q for the quarter ended November 24, 2007 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and |
| (2) | 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: January 3, 2008 | By: | /s/ John B. Bartlett |
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| John B. Bartlett, |
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| Chief Financial Officer (Principal Financial Officer) |
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