Proposed Addendum 53f combines the amendments to MINHERS Chapter 3 of interim addenda 53i and 55i. Interim addenda are adopted to resolve time critical problems. Interim addenda 53i and 55i provide modifications and clarifications of standards ANSI/RESNET/ICC 301-2019 and ANSI/RESNET/ACCA/ICC 310-2020 essential to updating rating software for implementation of those standards. Updated rating software must be available by April 1, 2021. The addendum includes changes to technical requirements of Standards 301-2019 and 310-2020 and exceptions that address the transition from Standard 301-2014 to 301-2019 for multi-family dwelling buildings. Additions and revisions to MINHERS Chapter 3 proposed by draft PDS-01 are shown with red print in strikeout/underline format. Comments will be accepted only on the text shown with strikeout/underline and in red print. To review the draft Addendum click on Draft PDS-01, MINHERS Addendum 53f, Modifications and Clarifications for Implementation of ANSI/RESNET/ICC 301-2019 To submit your comments click on RESNET Amendment Comment Online Form for Draft PDS-01, MINHERS Addendum 53f Comments are posted real-time and you will be able to review comments that were submitted by clicking on Comments Submitted on Draft PDS-02, MINHERS Addendum 53f The public comment period will be open beginning February 1, 2021 and ending March 2, 2021.