Proposed Addendum 53f combines the amendments to MINHERS® Chapter 3 of interim addenda 53i and 55i which provide modifications and clarifications essential to updating rating software to implement standards ANSI/RESNET/ICC 301-2019 and ANSI/RESNET/ACCA/ICC 310-2020. 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. Draft PDS-01 Addendum 53f was submitted for public comment and some of the comments resulted in changes to the proposed addendum. The changes to 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-02, 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-02, 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 July 28, 2021 and ending August 26, 2021.