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Door Prep For ELR Wiring

  • Updated

Door Prep for ELR Wiring

Proper door preparation is critical for ELR wiring and electric latch retraction. 
The key factor is the Z dimension, which ensures the touch bar fully retracts the latch.

Z dimension reference for standard 3' or 4' doors:

Door and device type
Door/Device TypeZ
Wide stile device with 2-3/4" backset2-1/4"
Narrow stile device on aluminum door/frame with 1-1/16" backset1-1/16"
Narrow stile device on hollow metal door/frame with channel cut to 1-1/8" recommended clearance2-1/8"

Additional Notes:

  • Disconnect all power before servicing.
  • Consult local codes to determine proper wiring.
  • ELR devices require a 150 series power supply.
  • Refer to installation instructions for detailed wiring and preparation steps.


See the reference image for visual guidance: 

ELR wiring door prep

Applies To

ELR Wiring

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