RULE 13a - 14(a) CERTIFICATION

I, John Reyes, certify that:

1.     I have reviewed this quarterly report on Form 10-Q of Public Storage;

2.     Based on my knowledge,  this quarterly report does not contain any untrue
       statement of a material fact or omit to state a material  fact  necessary
       to make the statements  made, in light of the  circumstances  under which
       such  statements  were made,  not  misleading  with respect to the period
       covered by this report;

3.     Based on my knowledge,  the  financial  statements,  and other  financial
       information  included  in this  report,  fairly  present in all  material
       respects the financial condition, results of operations and cash flows of
       the registrant as of, and for, the periods presented in this report;

4.     The  registrant's  other  certifying  officer and I are  responsible  for
       establishing  and  maintaining  disclosure  controls and  procedures  (as
       defined in Exchange  Act Rules  13a-15(e)  and  15d-15(e))  and  internal
       control over  financial  reporting  (as defined in the Exchange Act Rules
       13a-15(f) and 15d-15(f)) for the registrant and we have:

       a) designed  such  disclosure  controls  and  procedures,  or caused such
          disclosure   controls  and   procedures  to  be  designed   under  our
          supervision,  to ensure  that  material  information  relating  to the
          registrant,  including its consolidated subsidiaries, is made known to
          us by others within those entities,  particularly during the period in
          which this report is being prepared;

       b) designed such internal  control over  financial  reporting,  or caused
          such internal  control over  financial  reporting to be designed under
          our  supervision,   to  provide  reasonable  assurance  regarding  the
          reliability  of financial  reporting and the  preparation of financial
          statements for external purposes in accordance with generally accepted
          accounting principles;

       c) evaluated the  effectiveness of the registrant's  disclosure  controls
          and  procedures  and  presented in this report  conclusions  about the
          effectiveness of the disclosure  controls and procedures as of the end
          of the period covered by this report based on such evaluation; and

       d) disclosed  in this  report  any  change in the  registrant's  internal
          control over financial reporting that occurred during the registrant's
          most recent fiscal quarter (the registrant's  fourth fiscal quarter in
          the case of an annual  report)  that has  materially  affected,  or is
          reasonably  likely to materially  affect,  the  registrant's  internal
          control over financial reporting; and

5.     The registrant's other certifying officer and I have disclosed,  based on
       our most recent evaluation of internal control over financial  reporting,
       to the registrant's  auditors and the audit committee of the registrant's
       board of directors (or persons performing the equivalent functions):

       a) all significant  deficiencies and material weaknesses in the design or
          operation  of internal  control  over  financial  reporting  which are
          reasonably  likely to  adversely  affect the  registrant's  ability to
          record, process, summarize and report financial information; and

       b) any fraud, whether or not material,  that involves management or other
          employees who have a  significant  role in the  registrant's  internal
          control over financial reporting.

/s/ John Reyes
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Name:    John Reyes
Title:   Chief Financial Officer
Date:    August 8, 2008

                                  Exhibit 31.2