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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.
Passage, Privacy & Deadbolts
We strongly recommend door preparation not be done until the hardware is on site. These all fit into the door prep shown to the right. 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). 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 latch faceplate will sit in this recession.
Click on this link for Emtek's Door Prep Template.
Click on this link for Emtek's Installation Instructions.
These require no door prep. Dummy handles are surface mounted and my be located anywhere on the door you choose, but they are usually located to match the appearance of nearby operating locks.
Click on this link for Emtek's Installation Instructions.

Mortise Entry Sets
These sets require a very specialized door preparation. Door Prerparation should not proceed until the product is on site using the installation template typically provided.
Tubular Entry Sets & Keyed Decorative Plates
These require two sets of holes. Most sets on a single plate will require the center-to-center distance to be 5-1/2". Other sets require a center-to-center distance of 3-5/8" between the two sets of holes.

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