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Top » Door and Window Parts » Storm / Security Door Hardware » Marks Ornamental Iron Security Storm Door Parts

Marks Ornamental Iron Security Storm Door Parts

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Marks Ornamental Security Storm Door Parts & Hardware - Marks USA

Marks security door parts, Marks hardware, Marks Cylinders, Marks storm door parts, 

HANDING INFO: Key installed ABOVE or BELOW handle on OUTSWING security doors

Key Below - Viewed From Outside, Hinges on Left, Handle on Right (RHR)
if standing on the outside of door and the handle is on the Right this is a Right Hand Reverse (RHR).

Key Above - Viewed From Outside, Hinges on Right, Handle on Left  (RHR)
if standing on the outside of door and the handle is on the Left this is a Right Hand Reverse (RHR).

When the lock is inverted it changes the locking function. 
If your door does not match one of the above, then you have the opposite, Left Hand Reverse (LHR)

To remove Marks mortise cylinder that screws into door lock - 

After you loosen set screws on faceplate, The cylinder can be unscrewed with
1. A key that fits into cylinder, that does not work with the lock - New key on old cylinder or Old key on new cylinder
2. Putting key 1/2 way into cylinder and turning 
3.  a slotted screwdriver,  

NOTE 1: 
The threaded cylinder has a groove down the side that the set screw fits into.  The screw has to be removed enough for the cylinder to turn.
When reinstalling, the screw has to fit back into the groove to hold the cylinder in place.

 Note 2:
Pay attention to the cylinder before removal. The new one screws in the mortise lock and the orientation needs to be the same on the replacement.
If the old lock has the cuts of the key pointing up or down - the replacement must be the same for the lock to work properly

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