Lawrence Hardware

Concealed Door Loops

The patented Concealed Door Loop (CDL) is a low cost method of transferring low voltage power from the door frame to the locking device. Whereas typical door loops are surface mounted and remain constantly visible, the CDL slides into the door and/or frame completely concealing itself when the door is closed. Common applications include: use with continuous hinges, storefront conditions where offset hinges are used, and for most applications where ETH hinges or conventional door loops would be used. The CDL’s aesthetic appeal will benefit retrofits and new installations alike.


  • Durable finish
  • Special 1/4” flexible armoured conduit (i.d. 1/4”)
  • Supports up to 180° swing (Standard Butt and Continuous hinge applications)
  • Easy installation
  • Variable mounting locations

Models: CDL   Function: Standard Aluminum   Finish: Aluminum

Models: CDL-FX   Function: One side fixed   Finish: Black Anodized


  • CDL-EXT  extended 12”
  • CDL-EXT2 extended 18”


Download PDF

Lawrence Hardware
676 Petrolia Road, Toronto, ON M3J 2V2
Business Hours

Mon - Thur: 8:30am to 5:00pm
Fri: 8:30am to 1:00pm

Mon - Thur: 7:00am to 4:00 pm
Fri: 7:00am to 1:00pm
Shipping & pickup can be arranged based on these hours.

linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram