Yale BS3/4 BS Keyless Egress Night Latch

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Yale BS3/4 BS keyless egress night latch.

This Yale nightlatch that conforms to British Standards. Comes with a 20mm bolt for increased strength. The internal handle cannot be locked from the inside. This allows for ease of escape in case of an emergency.

Key operated from the outside. The latchbolt automatically deadlocks once the door is closed.


  • 60mm backset (40mm available via special request)
  • Supplied with cylinder and fixings
  • Supplied with 2 keys
  • Brass or chrome case finish
  • Key blank: YA-46D
  • BS8621:2004 (for escape locks)
  • Packaging: Visi-pack

Additional information

Weight 2 kg



Brass, Chrome


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