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Eternity Thick Door Kit (Extension Kit) - discontinued

If you want to install an iButton lock on a door that is thicker than a standard door, you will probably need an extension kit. The 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".
  • Eternity Thick Door Kit (Extension Kit) is designed for use with the Eternity E4 iButton Keypad Lock only.
  • With this kit, you can install an E4 on a door from 1-1/2” to 2-7/8” thick.
This kit includes:
  • 1 long square bar
  • 3 machine screws


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

Starting at: $14.99   MSRP: $18.75

SALE:  $14.99
Save: 20% off
(MAP) check

Select the Options You Want:

Lock Model:

The first few numbers of a lock model number determines the lock series. For example, a 2200 lock would be part of the 2000-Series. Each Series may include single and double-sided locks.


  • 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.
  • PARTS/SERVICES: Extension kits for thick doors/gates.

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