Item 11 (b)

     MBIA Capital/Claymore Managed Duration Investment Grade Municipal Fund


                                  CERTIFICATION
                             Pursuant to Section 906
                        of the Sarbanes-Oxley Act of 2002


          The undersigned, the President and Chief Executive Officer of the MBIA
Capital/Claymore Managed Duration Investment Grade Municipal Fund (the "Fund")
hereby certifies, with respect to the Fund's Form N-CSR for the period ended
July 31, 2004 as filed with the Securities and Exchange Commission pursuant to
18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley
Act of 2002, that:

         1. such Form N-CSR fully complies with the requirements of section
13(a) or 15(d) of the Securities Exchange Act of 1934; and

         2. the information contained in such Form N-CSR fairly presents, in all
material respects, the financial condition and results of operations of the
Funds.


Dated: September 30, 2004                          /s/ Clifford D. Corso
                                                   -----------------------------
                                                   Clifford D. Corso
                                                   President
                                                   (Principal Executive Officer)




     MBIA Capital/Claymore Managed Duration Investment Grade Municipal Fund


                                  CERTIFICATION
                             Pursuant to Section 906
                        of the Sarbanes-Oxley Act of 2002


          The undersigned, the President and Chief Executive Officer of the MBIA
Capital/Claymore Managed Duration Investment Grade Municipal Fund (the "Fund")
hereby certifies, with respect to the Fund's Form N-CSR for the period ended
July 31, 2004 as filed with the Securities and Exchange Commission pursuant to
18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley
Act of 2002, that:

         1. such Form N-CSR fully complies with the requirements of section
13(a) or 15(d) of the Securities Exchange Act of 1934; and

         2. the information contained in such Form N-CSR fairly presents, in all
material respects, the financial condition and results of operations of the
Funds.


Dated: September 30, 2004                          /s/ Marc D. Morris
                                                   -----------------------------
                                                   Marc D. Morris
                                                   Treasurer
                                                   (Principal Executive Officer)