Description
The Adams Rite 4900 Series Mortise Deadlatch provides flexible traffic control for institutional and commercial doors. Its reverse-key feature holds the bolt retracted, enabling two-way passage during open hours and exit-only security at other times. Ideal for schools, hospitals, and offices needing switchable access control without hardware replacement.
This mortise lock retrofits existing 4500/4700 preparations and interchanges with MS1850A or MS1850S deadbolts of matching backset and faceplate. It features a reversible brass latch bolt, stainless steel auxiliary pin to prevent forced entry, and corrosion-resistant steel case. Both flat and radius faceplates are included; flat plates adjust in-field for beveled edges. Standard 4902 strike fits flush-closing doors; specify 4901 for retrofit applications. Order cylinders, handles, paddles and pulls separately. As an authorized Adams Rite dealer, E.D. Locks provides expert selection and installation guidance: call 1-877-207-6067 or email sales@edlocks.com.
Specifications
- Brand: Adams Rite
- Series: 4900 Deadlatch
- Lock Type: Mortise
- Latch Bolt: Solid brass, reversible
- Case: Steel with corrosion-resistant plating
- Auxiliary Pin: Stainless steel, prevents loiding and case-knife entry
- Faceplates: Flat and radius supplied; flat adjustable for beveled edges
- Strike Options: 4902 (standard, flush doors), 4901 (retrofit), radius and long lip available
- Cylinder Backsets: 31/32 inch, 1-1/8 inch, or 1-1/2 inch
- Cylinder Type: Standard mortise with MS cam
- Operation: Turn key or operate handle/paddle to retract spring-loaded latch; reverse key turn holds bolt retracted
- Mounting: Screw-fastened tube spacer brackets
- Package: Individually boxed with flat and radius faceplates, strike, and machine screws
