Adams Rite MS-1891-4025-335 Lockset for 1-1/2" Backset in Black
SKU
MS-1891-4025-335
Model No
MS-1891-4025-335
$168.60
Product Highlights
- Black Anodized finish
- Cylinder Backset: 1-1/2"
- Case is made of stainless steel with corrosion-resistant plating that measures 1" x 7-3/8" x depth (depth varies by backset)
- Standard Stile Lip length
- Radius faceplate measures 1" x 6-7/8"

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The MS-1891-4025-335 from Adams Rite is a Lockset for 1-1/2" Backset in Black. The MS-1891-4025-335 series Deadlock/Deadlatch provides a maximum security deadlock for after hour and traffic control convenience during business hours. It operates in such a way that the 360 degree turn of key or thumb turn throws or retracts the hook-shaped deadlock and then 120 degree further turn retracts latch bolt as well. Cylinder may accept any standard 1-5/32" diameter mortise cylinder or thumb turn from either or both sides. Handle retracts spring-loaded latchbolt only.
Features
- Black Anodized finish: Provides a sleek and modern appearance while enhancing durability against wear and corrosion.
- Cylinder Backset: 1-1/2": Designed to fit standard door widths for easy installation and compatibility.
- Corrosion-resistant stainless steel casing: The robust construction measures 1" x 7-3/8" with depth varying by backset, ensuring long-lasting performance.
- Standard Stile Lip length: Facilitates compatibility with typical door profiles for seamless integration.
- Radius faceplate dimensions: 1" x 6-7/8", designed for aesthetic appeal and effective function.
- Handed operation - LH or RHR: Allows for customized installation to suit specific door configurations.
- Cylinder not included: Offers flexibility in choosing the preferred mortise cylinder for enhanced customization.
- Operable with standard cylinders: Accepts any standard 1-5/32" diameter mortise cylinder with MS cam, allowing for easy upgrades.
- Grade 1 strength: Provides superior security and resistance to forced entry, ideal for commercial applications.
- Durable latchbolt construction: Made of eight ply laminated stainless steel measuring 5/8" x 1-3/8" with a 13/16" throw, ensuring robust locking functionality.
- Armored Strike: Features a satin stainless steel trim plate with a steel mounting plate and dust box for added strength and security.
Adams Rite MS-1891-4025-335 Detailed Specifications
| Feature | Details |
| Finish | Black Anodized |
| Cylinder Backset | 1-1/2" |
| Case Material | Stainless Steel with Corrosion-resistant Plating |
| Case Dimensions | 1" x 7-3/8" (depth varies by backset) |
| Faceplate | Radius, 1" x 6-7/8" |
| Handing | LH or RHR |
| Cylinder Inclusion | Not Included |
| Cylinder Compatibility | Any standard 1-5/32" diameter mortise cylinder with MS cam |
| Strength Grade | Grade 1 |
| Latchbolt Material | Eight ply laminated stainless steel |
| Latchbolt Dimensions | 5/8" x 1-3/8" with 13/16" throw |
| Strike | Armored with stainless steel trim and dust box |
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