Intro
The Superior Brass Knob Lock 57mm Centres Polished Brass 175x50mm is a traditional door hardware solution designed for use with sash locks on internal and external doors. Crafted from solid brass, it delivers smooth operation, dependable security, and a timeless appearance suited to classic and heritage interiors.
Key Features & Benefits
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✅ Function: Knob lock set for sash lock applications
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✅ Design: Traditional knob style ideal for classic and heritage doors
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✅ Finish: Polished Brass for a rich, elegant look
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✅ Material: Solid Brass construction for durability and long service life
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✅ Compatibility: Designed to suit 57mm centres sash locks
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✅ Operation: Smooth knob action with secure lock engagement
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✅ Quality: Punched in-house for precise fit and consistent performance
Specifications
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Backplate Size: 175mm x 50mm
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Centres: 57mm
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Projection: 80mm
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Function: Knob lock
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Base Material: Solid Brass
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Finish: Polished Brass
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Unit of Measure: Pair
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Compatible Locks: 3 Lever Lock x9020 (45mm) or x9021 (60mm)
Applications
This knob lock set is ideal for traditional internal and external doors requiring sash lock functionality. It is well suited to heritage homes, period renovations, and residential projects where authentic styling and reliable security are essential.
Installation & Inclusions
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Suitable for standard door installation
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Recommended installation by a qualified locksmith or experienced tradesperson
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Includes pair of knob lock handles and fixing components (lock supplied separately)
Available Finishes
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Polished Brass
Why Choose Superior Brass?
Superior Brass is trusted for producing premium solid brass architectural hardware that combines classic design with dependable performance. This knob lock set enhances door security while preserving the traditional character of your space.
👉 This is a knob lock set designed for use with sash locks on traditional internal or external doors.
Q2. What material is it made from?
👉 It is manufactured from solid brass, providing strength, durability, and a classic premium finish.
Q3. Which locks is this knob set compatible with?
👉 This knob lock set is designed to be used with 3 Lever sash locks such as x9020 (45mm) or x9021 (60mm) with 57mm centres.
Q4. What warranty does this product come with?
👉 This product falls under locks, cylinders and latches and includes a 10 Years Mechanical Warranty and 5 Years Finish Warranty, applicable under normal residential use with correct installation and maintenance.
Q5. What finish is available for this model?
👉 This model is available in a Polished Brass finish, offering a timeless and elegant look for classic door applications.
Payment & Security
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