Vault Extension Kit for 60-120mm Thick Doors - Suits Fortress, Fortress Vision, Nexus and Nexus Vision
The Vault Extension Kit (Vault_Extension_Kit_1) lets you fit a Vault Fortress, Fortress Vision, Nexus or Nexus Vision smart lock to a thicker door - one 60mm to 120mm thick. It supplies the longer mounting screws, extension rods, extension washer and cylinder extension needed to span the extra thickness, plus two keys.
As standard, the Fortress and Fortress Vision fit doors 35mm to 55mm thick, and the Nexus and Nexus Vision 35mm to 60mm. Order the kit with your lock when your door is thicker than that. If your door is between 55mm and 60mm thick and you are fitting a Fortress or Fortress Vision, contact us before ordering.
Usually ships next business day.
We strongly recommend sending us photos of your door before you order, so we can confirm the kit and the lock suit it. Here is how to photograph your door thickness, and where to send your photos.
Key Features
- Extends the Fortress, Fortress Vision, Nexus and Nexus Vision to doors 60mm to 120mm thick
- Mounting screws in assorted lengths, so the installer uses the length your door needs
- Extension rods and an extension washer to bridge the extra door thickness
- Cylinder extension for the mechanical key override on a thicker door
- Two keys included
- Browse our other smart lock accessories
What's in the Box
- Extension mounting screws in assorted lengths
- Extension rods
- 1 x extension washer
- 1 x cylinder extension
- 2 x keys
Suitable Uses
- Entry doors 60mm to 120mm thick
- A Vault Fortress or Vault Fortress Vision on the Vault Innovative Mortice, or a Vault Nexus or Vault Nexus Vision deadbolt, where the door is thicker than standard
Vault smart locks are not suitable for fire-rated doors, such as apartment entry doors. For those, look at the Vault Arena or Vault Pulse access control systems with a fire-rated electric strike, or browse our fire door smart locks.
Full Specifications
Frequently Asked Questions
Only if your door is thicker than the lock fits as standard - over 55mm for the Fortress and Fortress Vision, or over 60mm for the Nexus and Nexus Vision - and no thicker than 120mm. Measure across the door where the lock goes: how to measure door thickness.
This kit suits the Fortress, Fortress Vision, Nexus and Nexus Vision only. For any other Vault lock on a thick door, contact us with photos of the door and we will find the right answer.
A confident DIYer can, but a thick door is a less forgiving install - the screws, rods and cylinder extension all have to suit the exact thickness. We recommend professional installation.
Additional Information
Warranty
Vault Smart Locks products purchased in Australia are covered against defects in materials and workmanship under normal residential or commercial use for:
- Standard range: 12 months from the date of purchase
- Select Signature Range models: 24 months (as stated on the product listing or packaging)
Returns & Warranty|View Vault Warranty Policy
This warranty operates in addition to your rights under the Australian Consumer Law.
Download PDF Resources
Specifications, box contents and installation for the Vault Fortress, one of the locks this kit extends - also the base manual for the Fortress Vision. Standard door thickness 35-55mm.
Specifications, box contents and installation for the Vault Nexus deadbolt, one of the locks this kit extends - also the base manual for the Nexus Vision. Standard door thickness 35-60mm.
PDF Files - Vault Extension Kit
Specifications, box contents and installation for the Vault Fortress, one of the locks this kit extends - also the base manual for the Fortress Vision. Standard door thickness 35-55mm.
Specifications, box contents and installation for the Vault Nexus deadbolt, one of the locks this kit extends - also the base manual for the Nexus Vision. Standard door thickness 35-60mm.
Vault Warranty
Vault Smart Locks products are backed by a manufacturer's warranty against defects in materials and workmanship under normal residential or commercial use. All claims are handled locally by Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries - start with us and we'll manage the process with Vault on your behalf.
Warranty Summary
How to Make a Claim
- Contact Terry's Gold Coast Smart Locks through the Returns & Warranty page above, with your proof of purchase (invoice or receipt).
- Have your product model and serial number (if applicable) ready, along with a brief description of the fault and your installation address.
- We assess your claim with Vault and advise the outcome and next steps. You may be asked to return the product for inspection.
What This Warranty Does Not Cover
- Normal wear and tear.
- Cosmetic damage that does not affect performance.
- Damage caused by incorrect installation, misuse, neglect, modification, or accident.
- Damage due to improper handling, or installation by an unlicensed technician.
- Products that have been disassembled, tampered with, or where the security seal or warranty label has been removed.
- Battery leakage or failure, or damage caused by incorrect battery usage.
- Environmental or weather damage caused by use outside recommended operating conditions.
- Labour, installation, or removal costs associated with replacing or reinstalling products.
- Work performed before warranty approval or assessment.
Important Notes
Where a Vault product carries an Ingress Protection (IP) rating, that rating is stated on the individual product listing, packaging or technical documentation. Unless stated otherwise in writing, the IP rating applies only to the external-facing side of the lock - not to the internal assembly, handle, battery compartment, electronics, cables or connectors. The internal side must be installed in a dry, sheltered position. An IP rating describes water resistance, not waterproofing: the lock must not be submerged, pressure washed, or exposed beyond its stated rating, and all seals, gaskets and covers must be correctly fitted and undamaged.
Vault's manufacturer policy applies a warranty assessment holding fee, which is refundable if the fault is found to be covered under warranty. If a product is assessed as outside warranty or damaged by an excluded cause, a discounted replacement may be offered. We will confirm any applicable fees and options with you before any assessment proceeds.
This warranty is provided in addition to your rights under the Australian Consumer Law (ACL). Our goods come with guarantees that cannot be excluded under the ACL. You are entitled to a replacement or refund for a major failure, and to have goods repaired or replaced if they fail to be of acceptable quality and the failure does not amount to a major failure.
Confused? Overwhelmed? We get it.
Choosing the right smart lock can be genuinely tricky - door types, backsets, app platforms, compatibility with your existing hardware... there is a lot to consider. We have decades of experience fitting locks of all types, including smart locks, and we are happy to help.
Our expert recommendation service is free. Upload a few photos of your door and describe what you need, and one of our qualified locksmiths will give you a personalised recommendation.
Get Your Free Recommendation →How it works - three easy steps:
1. Upload photos
A few clear shots of your door, lock and frame - inside and out.
2. We assess
Our locksmith reviews your setup and requirements - door type, weather exposure, how you want to use it.
3. You get a recommendation
A personalised recommendation tailored to your door, budget and needs. No pressure, no upsell.
Also useful while you are deciding:
