The Adams Rite 4510-25-201-628 Standard Duty Deadlatch provides the most flexible traffic control during business hours to allow two-way traffic for healthcare, retail, financial institutions, etc., and exit-only operation after business hours. The latchbolt is all metal with hardened steel internal pins, and there is an all metal auxiliary bolt that deadlocks the latchbolt to prevent case-knife entry. The case is steel with corrosion-resistant plating, and it is individually boxed with strike and mounting screws. The cylinder, paddle, and handle are available separately. It is interchangeable with any MS1850S Deadlock of the same backset and faceplate shape.
To operate, the deadlatch has a bolt holdback feature, meaning in order to fully unlock the door and leave it free swinging, you push the bolt into its retracted position and secure it by a simple reverse turn of the paired key. Turn the key or operate handle to retract the spring-loaded latchbolt. This lock accepts any standard mortise cylinder with MS® cam, and accepts cylinder from both sides.
- Flat faceplate
- Backset: 1-1/8"
- RH or LHR handing
- Strike size: Mortised (4902) 2-5/8"
- Strike shape: flat
- Lip length: standard jamb
- Dark bronze faceplate finish