The Legge 991 Commercial Mortice Lock Less Disc is a premium, high-durability hardware chassis explicitly modified for modern electronic access control integrations. While sharing the exact same robust structural footprint as the standard Legge 991MF primary commercial mortice lock, this specialized version has the internal hub discs completely removed. This engineering change allows a solid one-piece spindle to pass completely through the door, rather than relying on a traditional split-spindle array.
This “Less Disc” configuration makes the lock fully compatible with most leading commercial smart locks, including SALTO 8mm electronic handle sets, as well as all other standard 8mm and 7.6mm door levers featuring suitable multi-point structural fixings. By utilizing a solid spindle drive path, it provides maximum mechanical torque transfer and eliminates the common wear points associated with split-turn smart systems.
Manufactured to strict industrial standards, this lock body is fully fire-rated and certified for use on most fire-rated door assemblies across New Zealand, making it a dependable, code-compliant baseline for commercial facility fit-outs, schools, offices, and apartment blocks.
Key Product Features
Solid Spindle Optimization: Internal hub discs are factory-removed to permit un-hindered insertion of a one-piece 8mm solid drive spindle.
SALTO Smart Compatible: Engineered to interface cleanly with SALTO electronic escutcheons and alternative narrow-stile smart handle suites.
New Zealand Fire-Rated: Fully certified under local structural building codes for deployment across commercial fire-door perimeters.
Industry Workhorse Chassis: Based directly on the standard Legge 991 primary footprint, ensuring simple retrofitting into existing commercial doors without reshaping the primary mortice pocket.
Technical Specifications Matrix
Engineering Property
Verified Product Specification
Brand / Manufacturer
Allegion / Legge
Model Reference
991 Mortice Lock (Less Disc Configuration)
Chassis Backset
60mm Commercial Standard Backset Line
Spindle Size Compatibility
Natively accepts solid 8mm and 7.6mm square spindles
Compliance / Ratings
Commercial Grade | Approved for use on New Zealand fire door assemblies
Primary Function
Primary latching for commercial electronic escutcheons and smart locks
💡 Locksmith’s Installation Note:
The “Less Disc” variant is a massive operational and installation advantage for multi-thickness smart lock deployments. Standard split-spindle smart locks require precise door thickness measurements to be ordered, meaning if a split spindle isn’t exactly right on-site, installers face messing around grinding spindles down. If a split spindle sits too short, it risks slipping entirely. By utilizing the Legge 991 Less Disc paired with a single solid through-spindle (the baseline standard supplied with almost all modern smart locks), one universal setup accommodates wide variations in door thicknesses seamlessly, drastically reducing on-site installation failure risks and ensuring full hardware compatibility.
Legge 991 Commercial Mortice Lock Less Disc
$209.00 incl gst
Description
The Legge 991 Commercial Mortice Lock Less Disc is a premium, high-durability hardware chassis explicitly modified for modern electronic access control integrations. While sharing the exact same robust structural footprint as the standard Legge 991MF primary commercial mortice lock, this specialized version has the internal hub discs completely removed. This engineering change allows a solid one-piece spindle to pass completely through the door, rather than relying on a traditional split-spindle array.
This “Less Disc” configuration makes the lock fully compatible with most leading commercial smart locks, including SALTO 8mm electronic handle sets, as well as all other standard 8mm and 7.6mm door levers featuring suitable multi-point structural fixings. By utilizing a solid spindle drive path, it provides maximum mechanical torque transfer and eliminates the common wear points associated with split-turn smart systems.
Manufactured to strict industrial standards, this lock body is fully fire-rated and certified for use on most fire-rated door assemblies across New Zealand, making it a dependable, code-compliant baseline for commercial facility fit-outs, schools, offices, and apartment blocks.
Key Product Features
Technical Specifications Matrix
💡 Locksmith’s Installation Note:
The “Less Disc” variant is a massive operational and installation advantage for multi-thickness smart lock deployments. Standard split-spindle smart locks require precise door thickness measurements to be ordered, meaning if a split spindle isn’t exactly right on-site, installers face messing around grinding spindles down. If a split spindle sits too short, it risks slipping entirely. By utilizing the Legge 991 Less Disc paired with a single solid through-spindle (the baseline standard supplied with almost all modern smart locks), one universal setup accommodates wide variations in door thicknesses seamlessly, drastically reducing on-site installation failure risks and ensuring full hardware compatibility.
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