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Adams Rite Lever Operator 4550 - 313 (Dark Bronze)

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Adams Rite Lever Operator 4550 - 313 (Dark Bronze for MS1850S)

Adams Rite Lever Operator 4550 - 313 (Dark Bronze)

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  • Adams Rite Lever Operator 4550 - 313 (Dark Bronze)

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Adams Rite Lever Operator, 4550 - 313 (Dark Bronze)

Easy unlocking of any MS® deadbolt by approximately 3 lbs. downward force on a 3" lever. Lever is spring loaded to horizontal, relocks with upward motion. Indicator signals lock status. Can be installed in place of existing key cylinder or cylinder type thumbturn on inside of door.
Aluminum  casting  is  1-3/8" wide x 7-1/2" long x 1" deep. Attached to door stile by four #10 screws.
Stop Clearance:
Lever housing projects 11/16" forward of cylinder backset centerline. Depending on height of door stop and width of door/jamb gap, it may be necessary to modify the stop to clear the housing.
3" long aluminum with end-return design offers comfortable grip to lock or unlock.
Words LOCKED in red letters or OPEN in black letters appear on white background when lock is thrown or retracted. Indicator is driven by lock bolt itself.
Compatible Deadbolts:
Any MS® pivoted bolt deadbolt including Schoolhouse versions can be fitted with the 4550: MS1850S, MS1950, MS1837, etc. Derivative units such as 1870, 1870HM or 1877 flushbolts (bolt into threshold) are also operable by the 4550 lever. Not compatible with MS+1890 latchlock or with 7/8" backset locks.
Turn lever downward 90 degree to unlock. When released, lever returns to horizontal. Turn lever upward 90 degree to relock. Key operation from outside is not affected. Clutching action prevents damage to internal components.
*** These is a handed lever operator, if you are unsure of the door handing, click here ***

Additional Information

Weight 4.0000
Manufacturer Adams Rite
ANSI Lock Function No
Operation No
Backset No
IC Prep Option No
Fail Safe/Fail Secure No
Function No
Electrified Lockset Trims No

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