EXHIBIT 4.3
INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS' CONSENT
We have issued our report dated December 14, 2000 on the statements of
condition and related bond portfolios of Van Kampen Focus Portfolios, Municipal
Series 343 as of December 14, 2000 contained in the Registration Statement on
Form S-6 and in the Prospectus. We consent to the use of our report in the
Registration Statement and in the Prospectus and to the use of our name as it
appears under the caption "Other Matters-Independent Certified Public
Accountants" in Prospectus Part II.
GRANT THORNTON LLP
Chicago, Illinois
December 14, 2000
