Intro
The Superior Brass Knob Lock Privacy Polished Brass 150x42mm is a refined privacy knob solution designed for internal doors requiring secure locking with classic styling. Crafted from solid brass and engineered with a patented stainless steel ball bearing mechanism, it delivers smooth, friction-free operation. With a 4-hour fire rating, it combines traditional aesthetics with modern performance and compliance.
Key Features & Benefits
✅ Function Privacy knob lock set
✅ Finish Polished Brass
✅ Material Solid Brass
✅ Compatibility Suits 57mm privacy sash locks
✅ Mechanism Patented stainless steel ball bearing race for smooth operation
✅ Fire Rating Fire rated up to 4 hours
✅ Durability Heavy-duty construction for long service life
Specifications
• Unit of Measure Pair
• Size 150x42mm
• Lock Type Privacy
• Centre Compatibility 57mm privacy sash locks
• Projection 73mm
• Base Material Solid Brass
• Finish Polished Brass
• Mechanism Stainless steel ball bearing
• Fire Rating 4 Hours
• Item Status Punched in-house from passage set
• Brand Superior Brass
Applications
Ideal for bathrooms, bedrooms, and private internal spaces in residential homes, apartments, and heritage interiors. The polished brass finish complements classic, traditional, and federation-style designs.
Installation & Inclusions
• Suitable for professional installation or experienced DIY fitting
• Designed to integrate with standard 57mm privacy sash locks
• Supplied as a complete privacy knob lock set
Available Finishes
• Polished Brass
Why Choose Superior Brass
Superior Brass is trusted for authentic design, premium materials, and reliable engineering. This privacy knob lock offers smooth performance, fire-rated assurance, and timeless appeal for interiors that demand both function and style.
👉 This is a privacy knob lock set designed for internal doors requiring locking functionality with a thumb turn or privacy mechanism.
Q2. What lock type does this knob set suit?
👉 It is designed to suit 57mm privacy sash locks. Compatibility should be confirmed before installation.
Q3. What material is the knob lock made from?
👉 The knob set is manufactured from solid brass, providing durability, weight, and a premium traditional finish.
Q4. What warranty applies to this product?
👉 As a lock product, it includes a 10 Years mechanical warranty and a 5 Years finish warranty, covering defects in materials and workmanship under normal residential use when correctly installed.
Q5. Is this knob lock fire rated?
👉 Yes, it is fire rated for up to 4 hours, making it suitable for compliant internal door applications where required.
Payment & Security
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