Letterbox Locksmith Sydney
Most letterbox locks are easy to breach. iUnlock can secure your letterbox with superior quality locks from Carbine!
- The Carbine LBX uses next-generation anti-pick technology to protect against criminals trying to steal your identity.
- The Carbine LBX Pro uses stainless steel parts making it stronger and more resistant to corrosion than most letterbox locks.
- The Carbine LBX is a superior security lock that is more secure than the commonly used wafer camlocks in letterboxes. It uses a C4 keyway mechanism.
- The Carbine LBX is a retrofit lock designed to fit into most existing letterboxes, lockers, cabinets or cash boxes.

Are your Letter Boxes secure?
Call iUnlock to secure your letterbox using state-of-the-art locking technology from Carbine
- Most letterboxes in Australia can be opened using ONE master key.
- 90% of letterboxes use a ‘one key’ system for which there is a single master key for all boxes and criminals know this.
The Carbine LBX letterbox is a new and ingenious solution to security problems that have hounded homes and commercial properties for years.
Locked out? Lost your keys? Need a 24 hours locksmith?
The Carbine LBX employs a pin-tumbler key system, similar to the one used for front doors, making it significantly more secure compared to the wafer camlocks commonly found in most mailboxes.

Retrofits
The Carbine LBX is a retrofit lock built to fit most existing letterboxes, eliminating the need for you to retool the lock hole size.

Master-Key
The Carbine LBX can be “pinned” to provide a unique master-key that does not match any other master-key in existence (particularly useful for building managers who
may supervise many letterboxes).

Convenient
The Carbine LBX can have the same pin-tumbler sequence as your front door giving you the convenience of open both with just one key.
Key Features of Carbine LBX – Retrofit Letterbox
The Carbine letterbox lock gives you the option of either a 5 or 6 pin C4 keyway or keying in with your restricted key system. Perfect for lockers, letterboxes, cash boxes or cabinets.
- Pick resistant pin-tumbler design
- Removes compromised wafer-cam key system that burglars can easily open
- No universal master-key
- A simple retrofit makes it easy to install
- The advantage of a single key for both the house and letterbox
- Patented design
- Letterbox banks typically found in office or apartment complexes can have their locks pinned giving the building manager the ability to open up some or all of the boxes.
- BX PRO uses 316 stainless steel for its body, cam and nut
- LBX PRO uses 6061 aluminium spacers
iUnlock is One of the Most Reliable Strata Locksmiths Sydney Customers Trust.
iUnlock prefers Carbine locks for both residential and commercial applications for their superior quality, versatility and ease-of-installation.
"*" indicates required fields