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Eternity Thick Door Kit (Extension Kit)


Brand-New, Authentic, Manufacturer-Authorized,
and Full Warranty GUARANTEED!  check

MSRP: $18.75

SALE:  $15.00
Save: 20% off
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  • ACCESSORIES: items to use with keyless locks (closers, guards, handles, lube, software, stops, security screws, trim plates, etc.).
  • KITS: for installing locks on different types of doors/gates.





If you want to install an iButton lock or ResortLock on a door that is thicker than a standard door, you will probably need an extension kit.

The PT121 Extension Kit makes it possible for the outside and inside lock bodies to attach to each other when they are mounted on a door or gate that is thicker than 1-3/4".

This kit is compatible with the following locks:

This kit includes:

  • 1 long square bar (2-7/8" x 1/4" x 1/4")
  • 3 machine screws (1-1/2")


PT121 Extension Kit will accommodate Inches Millimeters
a minimum door or gate thickness of: 1-3/4" 44 mm
a maximum door or gate thickness of: 2-7/8" 73 mm


Google Product Category: 503730 - Hardware > Locks & Keys > Locks & Latches