Designed to replace the original Yale lock. The centre of the keyhole must be 60mm from the edge of the door. Lock snib - see if the door is deadlocked, preventing access from the outside even with a key.
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Brass Replacement Mortise Rim Cylinder Door Night Latch Lock Cross Shaped Nightlatch + 6 Keys
Aliexpress UK
Yale B-77-ENB-PB-60 Traditional Nightlatch and Cylinder, 60mm Backset. Yale standard security 60mm nightlatch. Supplied with 1109 cylinder and 2 keys. Internal snib button is used to engage the deadlock or temporarily hold back the latch bolt.
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YALE 60mm DMG DEADBOLT NIGHT LATCH NIGHTLATCH LOCKCASE ONLY - NEW. Deadbolt Operation. Made by YALE and is of a very quality and standard. LOCK CASE ONLY - NO RIM CYLINDER PROVIDED.
eBay
YALE 60mm DMG NIGHT LATCH NIGHTLATCH LOCKCASE ONLY - NEW. Made by YALE and is of a very quality and standard. Lock snib - see if the door is deadlocked, preventing access from the outside even with a key.
eBay
YALE 40mm DMG NIGHT LATCH NIGHTLATCH LOCKCASE ONLY - NEW. Made by YALE and is of a very quality and standard. Lock snib - see if the door is deadlocked, preventing access from the outside even with a key.
eBay
Professional traditional night latch door lock. • Finish – Brass Coated. • Lock body – 90mm x 60mm. • 90mm standard style lock. • Number of keys – 3 (per lock). • Cylinder hole – 35mm. External locking is by key while internal locking is with the button.
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Latch Can Be Deadlocked By The Snib Button Internally. Snib Function Enable The Latch To Be Held Back. Supplied With Rim Cylinder. Rim Cylinder. Surface Fixed Lock. Ideal For Securing Both Left & Right Handed, Inward Opening Doors.
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YALE 40mm DMG NIGHT LATCH NIGHTLATCH WITH ERA RIM CYLINDER SATIN CHROM FINISH - NEW. Made by YALE and is of a very quality and standard. ERA RIM CYLINDER - 5 pins. LOCK CASE ONLY - NO RIM CYLINDER PROVIDED.
eBay