Topic NFPA 80 (USA) IS 3614:2021 (India) Common Points Key Differences Scope Covers fire doors, shutters, dampers Covers fire doors, doorsets, frames, sliding & rolling shutters Both regulate fire door safety IS has broader scope; NFPA includes dampers Fire Rating Integrity only Integrity + Insulation (min 30 min) Both require integrity testing IS requires insulation; […]