Amesbury P3000 Active Spring Latch Mechanism. Backset: 45mm (1.75). 5/8 inch case width. Amesbury spring latch gearbox. Markings: AHP45LT-100DT.
Box with deadbolt sold separately P3000-45DB.
***Special order, non-returnable. Allow 1 to 2 weeks for shipping.