Securitech 5000 Series Mortise lockset for installation in vertically stiffened steel fire door assemblies rated up to and including 3 hour durations.
See Door and Frame Manufacturer’s Listings for additional assembly information for maximum sizes and limitations of use. Securitech BS 476 fire resistance 5000 Series Fire Rated Mortise Lock is intended for use only with BS 476 fire resistance door and frame assemblies that have been tested and Listed to BS 476 for a 3 hour integrity rating.
LIMITATIONS
Mortis lock with 3/4" minimum latch throw
Maximum door width 4' 0"
Maximum door height 8' 0"
