The 1875-IB from Adams Rite is a robust two-point deadlock designed to enhance security for roll-up doors, security screens, and similar door types. Its dual bolt operation from either side ensures maximum protection, while the compatibility with standard mortise cylinders offers convenient key control. With a reliable 90-degree rotation mechanism, this deadlock provides secure locking and unlocking in both projected and retracted positions, making it an ideal choice for overhead garage doors and security applications.
Adams Rite 1875-IB Deadlock Features
- Security: Two-point locking mechanism enhances security by throwing two bolts from either or both sides.
- Durability: Constructed with steel and coated with corrosion-resistant plating, ensuring longevity and resistance to wear.
- Compatibility: Accepts any standard 1-5/32″ diameter mortise cylinder with MS cam for ease of use and key control.
- Convenience: 90-degree rotation of the turn efficiently throws or retracts bolts, allowing for quick access and secure locking.
Adams Rite 1875-IB Detailed Specifications
| Feature | Details |
|---|---|
| Cylinder Height (Backset) | Requires inside stile clearance of 1-11/16″ on one side of cylinder center, 1″ on the other |
| Case Dimensions | Measures 1″ x 6″ x 2-5/8″ |
| Bolt Arms Throw | 1-1/32″ throw |
| Compatibility | Operable by any standard 1-5/32″ diameter mortise cylinder with MS cam |



















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