Adams Rite 4900 Heavy Duty Deadlatch
Function: Flexibility of traffic control and installation is offered by 4900 Heavy Duty Deadlatches. A reverse turn of the key while bolt is held retracted retains the bolt, to allow two-way traffic for applications which require free entrance at certain times and exit-only at other times. Interchangeable, without stile modification, with any MS1850A or MS1850S deadbolt of same backset and faceplate shape. Also retrofits to existing 4500 and 4700 Deadlatch preparations. 1-3/4” minimum door thickness required.
Operation: Turn key or operate handle or paddle to retract spring-loaded latch bolt. To hold bolt retracted, push it in and secure by reverse turn of key. Uses any standard mortise cylinder with MS® dimensioned cam.
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Bolt Holdback: While bolt is held fully retracted, a reverse turn of the key retains the bolt, allowing the door to be free swinging.
Cylinder Backset: 31/32”, 1-1/8”, or 1-1/2”
Case: Measures 7/8” x 5-13/16” x depth. Depth varies by backset (see table on catalog page). Steel with corrosion-resistant plating. Screw-fastened tube spacer brackets allow for cleaner removal when tab mounting.
Latchbolt: 5/8” x 1” x 5/8” throw. Solid brass. Handing is easily reversible using only a screwdriver.
Auxiliary Latchpin: Stainless steel. Deadlocks latch bolt to prevent “loiding” or case-knife entry.
Faceplates: Measures 1” x 6-7/8”. Both flat and radius faceplates are supplied. Flat faceplates can also be adjusted in the field for right or left beveled edge doors.
Strikes: Standard strike furnished is 4902 for flat jamb where door closes flush or nearly flush. Specify 4901 for retrofit installations. Also available: radius strike for opposite stile in paired doors and long lip strikes for centerhung doors.
Cylinder Cam: 4900 Heavy Duty Deadlatches are operable by any standard 1-5/32” diameter mortise cylinder with MS® cam, dimensioned as shown. Cylinders with MS® cams can be readily obtained from most cylinder manufacturers. See CYLINDERS for cylinder make, thumbturn and trim ring information.
Options: Backset, strike, and finish must be specified when ordering.
Standard Package: Individually boxed with flat and radius faceplates, strike, and machine screws for mounting. Order cylinders, paddles, handles, or lever operators separately.
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