The MS-1891W3026-628 from Adams Rite is a high-security lockset designed for a 1-1/8″ backset with a clear anodized finish. This lockset features a robust deadlock/deadlatch mechanism that provides maximum security for after-hours use and convenient traffic control during business hours. The user-friendly design allows for a 360-degree turn of the key or thumb turn to engage the deadlock, along with a further 120-degree turn to retract the latch bolt, ensuring both security and ease of use.
Adams Rite MS-1891W3026-628 Lockset Features
- Clear Anodized finish: Offers durability and resistance to corrosion, enhancing the lock’s longevity.
- Cylinder Backset: Designed specifically for a 1-1/8″ backset, ensuring a perfect fit for your door.
- Stainless Steel Construction: The case is made from stainless steel with corrosion-resistant plating for superior strength and durability.
- Standard Stile Lip length: Compatible with standard door configurations for easy installation.
- Radius Faceplate: The 1″ x 6-7/8″ weatherstrip faceplate provides a seamless appearance while protecting against the elements.
- Handed Operation: Available in Right Hand or Left Hand Reverse configurations to accommodate various door setups.
- Cylinder Not Included: Allows for customization based on security needs with any standard 1-5/32″ diameter mortise cylinder.
- MS+1891W Compatibility: Can be operated by any standard mortise cylinder with MS cam for added versatility.
- Grade 1 Strength: Meets high-security standards for reliability in commercial applications.
- Eight Ply Laminated Latchbolt: Made of stainless steel measuring 5/8″ x 1-3/8″ with a 13/16″ throw for enhanced security.
- Armored Strike Plate: Features a satin stainless steel trim plate with a steel mounting plate and dust box for extra protection.
Adams Rite MS-1891W3026-628 Lockset Specifications
| Finish | Clear Anodized |
| Cylinder Backset | 1-1/8″ |
| Case Dimensions | 1″ x 7-3/8″ (depth varies by backset) |
| Faceplate Dimensions | 1″ x 6-7/8″ |
| Handing | Right Hand or Left Hand Reverse |
| Cylinder Compatibility | 1-5/32″ diameter mortise cylinder |
| Strength Rating | Grade 1 |
| Latchbolt Material | Eight ply laminated stainless steel |
| Latchbolt Dimensions | 5/8″ x 1-3/8″ with 13/16″ throw |
| Strike Plate Material | Satin stainless steel with steel mounting plate |



















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