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Technical Features



"excellent engineered design"

  • Solid steel, surface mounted rim lock in red with locking bars extending across lock body for additional strength

  • Four thousand million key combinations

  • Integral cylinder which cannot be extracted

  • Anti-drill cylinder formed of several composites of metal HSS (hard soft system) patented

  • Anti-glue facility

  • Two anti-hacksaw locking bars each containing two hardened steel rollers

  • Side locating hardened steel security pin

  • Fixing screws and bolts as applicable

  • Steel escutcheon plate in red with hardened steel bolts together with anti-drill fixings

“easily recognisable for the Fire & Rescue Service”

  • The escutcheon plate is coded to assist in identification for the property manager

  • The red escutcheon plate is easily recognisable for the Fire & Rescue Service to gain access using their own unique Gerda One Key® System

  • The option of keeps for timber and steel doors.

Product Information






                 KM524079 BS8621


                  KM524077 BS3621