key lock inside and outside

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Check the following: Debris in the cylinder The cylinder cap could be too loose Incorrect pinning of the cylinder The cylinder plug is not returned to the neutral position with the cylinder s...
Apartment Corridor Lock function is defined as a lock where the latch bolt operated by lever from either side, except when outside lever is made inoperative by a stop or mechanical means other than...
The S51 is a tubular entrance lock with a key outside and a turn button on the inside. Function: Unlocked by key from outside when outside lever is locked by turn-button in inside lever. Inside le...
Putting a standard non-hotel cylinder in a L9485 or L9486 will change the operation of the lock to the L9480, storeroom lock with deadbolt.