EXHIBIT 99(b) CERTIFICATE OF THE CHIEF FINANCIAL OFFICER OF UNIVERSAL FOREST PRODUCTS, INC. Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350): I, Michael R. Cole, Chief Financial Officer of Universal Forest Products, Inc., certify, to the best of my knowledge and belief, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350) that: (1) The report on Form 10-K for the period ended December 28, 2002, which this statement accompanies, fully complies with requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) The information contained in this report on Form 10-Q for the period ended December 28, 2002 fairly presents, in all material respects, the financial condition and results of operations of Universal Forest Products, Inc. UNIVERSAL FOREST PRODUCTS, INC. Date: March 14, 2003 By: /s/ Michael R. Cole ------------------------- ------------------------------- Michael R. Cole Its: Chief Financial Officer