YALE
YALE B-89 Deadlocking Nightlatch
Part No.
630089001702
Procurement Intelligence
The YALE B-89 is a deadlocking nightlatch from Yale's B-series, designed for external door entry with automatic deadlocking on closure to prevent shimming attacks. Installation requires standard door preparation and frame compatibility verification. Critical verification: confirm door thickness (typically 35-45mm) and backset requirement (60mm or 70mm) match the installation opening.
External residential door entry
Before ordering — verify:
| ☐ | Door thickness compatibility |
| ☐ | Backset measurement required |
| ☐ | Cylinder type specification |