 NEW YORK--BUSINESS WIRE--BlackRock Advisors, LLC BlackRock announced today an investment policy update and name change for BlackRock Muni Intermediate Duration Fund, Inc. the Fund NYSE: MUI, CUSIP:09253X102. The Funds Board of Directors has approved the elimination, effective October 1, 2021, of the Funds non-fundamental policy to maintain a dollar-weighted average portfolio duration, as calculated by BlackRock, of three to ten years. In connection with this investment policy chan 