Smoke-Rated and Fire-Rated Doors
2.1 Standard specifications
The standard specifications given in this section apply for locks and multi-point locks that are intended for
use in smoke and fire protection closures.
The goal of smoke and fire protection closures is to prevent fire and/or smoke from expanding within a
In case of fire, adjacent sections of the building remain undamaged so that an unobstructed rescue route
exists for saving lives in case of an emergency.
A central requirement of the locking part is to keep the door closed reliably and for a long period of
time, even under the influence of heat.
Abbreviations of terminology for fire-rated and smoke-rated doors
FS Locking part for fire-rated and smoke-rated doors
RD Locking part for smoke-rated doors
FH indicates that a product is fire resistant and corresponds to a resistance time <
30 minutes. This abbreviation is no longer used in the more recent standards.
10 Last update: 11.01.2013