Exhibit 32 CERTIFICATION OF CEO AND CFO 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 on Form 10-K of Public Storage Properties IV, Ltd. (the "Partnership") for the year ended December 31, 2006 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), Ronald L. Havner, Jr., as Chief Executive Officer of Public Storage, Inc., and John Reyes, as Chief Financial Officer of Public Storage, Inc., each hereby certifies, pursuant to 18 U.S.C. ss.1350, as adopted pursuant to ss.906 of the Sarbanes-Oxley Act of 2002, that: (1) The Report fully complies with the requirements of Section 13(a) 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 Partnership. /s/ Ronald L. Havner, Jr. - -------------------------- Name: Ronald L. Havner, Jr. Title: Chief Executive Officer and President of Public Storage, Inc., Corporate General Partner Date: March 30, 2007 /s/ John Reyes - -------------------------- Name: John Reyes Title: Chief Financial Officer of Public Storage, Inc., Corporate General Partner Date: March 30, 2007 This certification accompanies the Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the Sarbanes-Oxley Act of 2002, be deemed filed by the Partnership for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.