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  Quarterly  Report  on Form  10-Q of  Public  Storage
Properties IV, Ltd. (the  "Partnership")  for the quarterly  period ended March
31,  2005 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.,  corporate  general  partner,  and John Reyes, as Chief
Financial  Officer of Public Storage,  Inc.,  corporate  general partner,  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 of Public Storage, Inc.,
         Corporate General Partner
Date:    May 16, 2005

/s/  John Reyes
- ------------------------------------
Name:    John Reyes
Title:   Chief Financial Officer of Public Storage, Inc.,
         Corporate General Partner
Date:    May 16, 2005