The ‘DIIM’ of Firestopping™ is defined as the proper ‘D’esign, ‘I’nstallation, ‘I’nspection, and ‘M’aintenance of Protection of Firestop Systems. In this session, we introduce the 'DIIM' of Firestopping™. Attendees will learn about the success stories of impartial implementation of Firestopping from 'D'esign to 'I'nstallation, 'I'nspection and 'M'aintenance.