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Most locks fit
into a standard American style tubular door prep. If you are replacing
existing locks then your door preps will most likely be correct for
most locks. Just determine the backset and you're ready to order. If
you're installing locks in new doors that do not have a door prep you
can follow the instructions below.
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BACKSET - In the U.S. there are two common backsets for
residential locks, 2-3/8" and 2-3/4". The backset is the
distance from the edge of the door to the center of the 2-1/8"
bore hole. We will pack your locks with a 2-3/8" or 2-3/4"
latch depending on which backset you specify. Dummy sets have no latch
and are surface mounted so you can install a dummy set wherever you
choose on the door.
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PASSAGE,
PRIVACY, KEY-IN-KNOB OR LEVER, AND DEADBOLT LOCKS fit into the door
prep shown above. Bore a 2-1/8" hole
through the door. The center of this hole should be located
2-3/8" or 2-3/4" back from the edge of the door (this is the
backset dimension).
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Bore a
1" hole in the edge of the door located on the centerline of the
2-1/8" hole. The latch will fit into the 1" hole. Chisel out
a 1" by 2-1/4" rectangle on the edge of the door, 1/8"
deep. The faceplate of your latch will sit in this recession.
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1"
Edge Bore with Rectangular Recess for Latch Faceplate
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3-5/8" Center to Center Spacing for Keyed Sideplates
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KEYED LOCKS WITH
SIDEPLATES require two sets of holes with a center-to-center
distance of 3-5/8" between the two sets of holes.
WARNING
Center-to-center hole distance varies by manufacturer. Check your product information before drilling any holes.
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