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EXHIBIT 5.1
CONSENT OF INDEPENDENT ACCOUNTANTS
The Sponsors and Trustee of Municipal Investment Trust Fund, Insured
Series--408, Defined Asset Funds:
We consent to the use in this Registration Statement No. 333-38118 of our report
dated September 8, 2000 relating to the Statement of Condition of Municipal
Investment Trust Fund, Insured Series--408, Defined Asset Funds, and to the
reference to us under the heading "How the Fund Works--Auditors" in the
Prospectus which is a part of this Registration Statement.
DELOITTE & TOUCHE LLP
New York, NY
September 8, 2000