Can we help?
Call us on 020 8662 4010

Duffells is a trade only supplier

Marston FB4 Rim Latchlock

Product Information

Fire Brigade locks and padlocks are used in communal areas such as dry risers, utility cupboards, car parks and bin stores where authorised personnel and emergency services can gain access using common keys.

Marston FB4 rim locks are UK Fire Brigade approved surface mounted slam latch locks, which are specified in areas where the Fire Brigade can gain access in an emergency situation without breaking in the door.

FB4 rim locks are handed with inward or outward opening options, see handing chart for details.

The latch is withdrawn with the key from the external side of the door and a turn knob from the inside.

Keys are not supplied and sold separately.


  • Backset (keyhole): 45mm
  • Width: 20mm
  • Height: 79mm
  • Depth: 110mm
  • Bolt throw: 27mm


  • Latchbolt is withdrawn by key on outside
  • Latchbolt is withdrawn by knob on inside


  • Not supplied with keys
  • Locks are handed
  • Pre-cut keys are available


  • Available in singles
  • 10 locks to an outer box



Please login to view prices.

Order in the next 15 hours and 51 mins for delivery on Wednesday 21 August

Clear All

Select Description


Select Finish

See all variations

Your session will expire in xx.xx
Continue or Log Out