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, 2004 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 of Public Storage, Inc.,
         Corporate General Partner
Date:    March 31, 2005

/s/  John Reyes
------------------------------------
Name:    John Reyes
Title:   Chief Financial Officer of Public Storage, Inc.,
         Corporate General Partner
Date:    March 31, 2005



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.