Commercial mortice locks are a cornerstone of door hardware across Australian commercial buildings, offering durability, security, and compatibility with local door standards. From offices and retail spaces to schools and multi‑tenant facilities, these locks are selected for their strength, adaptability, and professional finish. Understanding how they work, what specifications matter, and how different product variants compare helps builders, locksmiths, and facility managers make informed decisions.
In Australia, mortice locks are commonly specified with particular backsets, functions, and finishes to suit both timber and metal doors. Among these, 60mm backset vestibule-style mortice locks are especially popular due to their balance of security and ease of use. This article explains how commercial mortice locks are used in Australian buildings, with a closer look at 60mm backset options, SKUs, and considerations around fire testing.
Commercial Mortice Locks for Australian Buildings
Commercial mortice locks are designed to be installed into a pocket, or “mortice,” cut into the edge of a door. This construction allows the lock body to sit flush within the door, providing greater strength and resistance to tampering compared to surface-mounted alternatives. In Australian commercial settings, these locks are widely used on hinged doors where reliability and long service life are essential.
A common configuration in offices and shared buildings is the vestibule function, where the outside handle is usually fixed or controlled by access hardware, while the inside handle allows free egress. This setup supports controlled entry without compromising safety for occupants inside the building. Vestibule mortice locks are often paired with lever furniture and cylinders that meet Australian door preparation standards.
Many Australian projects reference a well-known 60mm backset vestibule mortice lock as a benchmark for quality and performance. Our own commercial mortice lock is manufactured in the same factory and follows the same core design and dimensions, ensuring compatibility with existing door preparations. This makes it a practical option for both new installations and replacements in commercial buildings.
60mm Backset Options, SKUs, and Fire Testing
The 60mm backset is one of the most commonly specified dimensions in Australia, particularly for commercial timber doors. This measurement, taken from the faceplate to the centre of the spindle, suits standard door stiles and provides comfortable clearance for lever handles. As a result, 60mm backset mortice locks are frequently chosen by architects and locksmiths for consistency across projects.
Our equivalent 60mm backset vestibule mortice lock is available under two specific SKUs: 26-6100SBL (matte black finish) and 26-6100SSS (stainless steel finish). These SKUs typically differentiate by finish, allowing specifiers to match surrounding hardware such as hinges, door closers, and lever sets. Having clearly defined SKUs simplifies ordering, stock control, and long-term maintenance for commercial sites.
One important distinction to note is fire testing. While the commonly referenced 60mm backset mortice lock has undergone fire testing, our version has not been fire tested. This does not affect its suitability for many standard commercial applications, but it does mean it should not be specified for fire-rated doors where certified hardware is required. As always, confirming door and building code requirements is essential when selecting any commercial lock.
Commercial mortice locks remain a trusted solution for Australian buildings due to their robust construction, clean installation, and flexibility across different door types. The 60mm backset vestibule mortice lock, in particular, has become a de facto standard in many commercial environments, valued for its practicality and compatibility.
By understanding backset options, SKU variations like 26-6100SBL and 26-6100SSS, and the implications of fire testing, decision-makers can choose the right lock for each application. Whether for new builds or upgrades, selecting the correct commercial mortice lock ensures security, compliance, and long-term performance in Australian commercial spaces.
Functions
- Anti-Lockout: The lock comes with a built in ANTI-LOCKOUT function.
- Universal handing: The stainless steel latch bolt is fully reversible by removing the faceplate and simply rotating the bolt (refer to handing chart).
- Door Thickness: Standard locks will suit 32mm-50mm thick doors. Extended cylinders, spindles and screws available upon request for thicker doors.
- Door Furniture: The lock case will accept door furniture with bolt through fixing for 38mm-41mm horizontal and 50.8mm diagonal applications.
Below is a guide as to what cams to install on the back of the oval cylinders or thumb turns. The different combinations
