POWER OF ATTORNEY

         Know all by these presents, that the undersigned hereby constitutes
and appoints each of Steven G. Osgood and Nick Katzakis signing singly, and
with full power of substitution, the undersigned's true and lawful
attorney-in-fact to:

         (1)      execute for and on behalf of the undersigned, in the
                  undersigned's capacity as an officer and/or trustee of
                  U-Store-It Trust (the "Company"), Forms 3, 4 and
                  5 in accordance with Section 16(a) of the Securities
                  Exchange Act of 1934 and the rules thereunder;

         (2)      do and perform any and all acts for and on behalf of the
                  undersigned which may be necessary or desirable to complete
                  and execute any such Form 3, 4, or 5 and timely
                  file such form with the United States Securities and
                  Exchange Commission and any stock exchange or similar
                  authority; and

         (3)      take any other action of any type whatsoever in
                  connection with the foregoing which, in the opinion of
                  such attorney-in-fact, may be of benefit to, and in the
                  best interest of, or legally required by, the undersigned.

         The  undersigned hereby grants to each such attorney-in-fact full
power and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the
rights and powers herein granted, as fully to all intents and purposes as
the undersigned might or could do if personally present, with full power
of substitution or revocation, hereby ratifying and confirming all that
such attorney-in-fact, or such attorney-in-fact's substitute or substitutes,
shall lawfully do or cause to be done by virtue of this power of attorney and
the rights and powers herein granted.  The undersigned acknowledges that the
foregoing attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934.

         This Power of Attorney shall remain in full force and effect until
the undersigned is no longer required to file Forms 3, 4, and 5 with respect
to the undersigned's holdings of and transactions in securities issued by the
Company, unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.

         IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 18th day of October, 2004.




                                       /s/ Bernard L. Karr  
                                       Name:  Bernard L. Karr
                                       Trustee

SWORN TO BEFORE ME AND SUBSCRIBED IN MY PRESENCE THIS 18TH DAY OF OCTOBER, 2004.