POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby
constitutes and appoints each of Jeffrey D. Fisher, Randy C.
Martin, Randy C. Ridenhour and Thomas J. Smyka, signing singly,
the true and lawful attorney-in-fact of the undersigned:

    (1) To execute for and on behalf of the undersigned, in
        the undersigned's capacity as a director and/or
        officer of Spartech Corporation, a Delaware
        corporation (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) To 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, complete
        and execute any amendment or amendments
        thereto, and timely file such form with the
        United States Securities and Exchange
        Commission and any stock exchange or
        similar authority; and

    (3) To 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, in the best
        interest of, or legally required by, the
        undersigned, it being understood that the
        documents executed by such attorney-in-fact
        on behalf of the undersigned pursuant to
        this Power of Attorney shall be in such
        form and shall contain such terms and
        conditions as such attorney-in-fact may
        approve in such attorney-in-fact's
        discretion.

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 1st day of
May, 2006.



                               /s/ Victoria M. Holt
                                   Signature
                                   Victoria M. Holt
                                   Print Name