Superior Brass Knob Lock CC 57mm Polished Chrome 200 x 50mm (Pair) Only lever Set

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Superior BrassSKU: SUP37015K
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Price:
$119.95 $125.95

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Intro

The Superior Brass Knob Lock CC 57mm in Polished Chrome is a dependable locking solution for doors using sash locks. Crafted from solid brass and engineered with a patented stainless steel ball bearing mechanism, it delivers smooth operation, long-term durability, and fire-rated performance.

Key Features & Benefits

  • Function: Entrance Knob Lock

  • Centres: 57 mm (Sash Lock compatible)

  • Finish: Polished Chrome

  • Material: Solid Brass construction for strength and longevity

  • Operation: Patented stainless steel ball bearing mechanism for smooth action

  • Security: Designed for doors requiring keyed locking via sash locks

  • Certification: Fire rated up to 4 hours

Specifications (Points)

  • Backplate Size: 200 x 50 mm

  • Centres (CC): 57 mm

  • Projection: 70 mm

  • Function Type: Knob Lock for Sash Locks

  • Material: Solid Brass

  • Finish: Polished Chrome

  • Unit of Measure: Pair

Applications

Ideal for internal and external doors in residential and light commercial settings where sash locks are used. Suitable for offices, studies, and controlled-access rooms requiring secure locking with a classic knob profile.

Installation & Inclusions

  • Suitable for standard door preparation

  • Designed for use with sash locks

  • Used in conjunction with 3 Lever Lock x39020 (45 mm) or x39021 (60 mm)

  • Package includes knob lock set and fixing components

Available Finishes

  • Polished Chrome

Why Choose Superior Brass?

Superior Brass is trusted for precision-crafted hardware that combines durability, smooth performance, and refined finishes. This knob lock provides reliable security, fire-rated assurance, and a premium solid brass build for long service life.

Frequently Asked Questions
Q1. What type of product is this?
👉 This is a knob lock set designed for doors using 57 mm centre sash locks, providing keyed security.

Q2. Is this suitable for internal or external doors?
👉 Yes, it can be used on both internal and external doors where a sash lock is installed and keyed access is required.

Q3. What material is this knob lock made from?
👉 It is manufactured from solid brass, ensuring durability, strength, and a quality feel.

Q4. What warranty applies to this product?
👉 This product falls under the Locks, Cylinders and Latches category and includes a 10-year mechanical warranty and a 5-year finish warranty, subject to correct installation, normal use, and proper maintenance.

Q5. Is the Polished Chrome finish covered under warranty?
👉 Yes, the Polished Chrome finish is covered by a 5-year finish warranty, protecting against manufacturing defects under normal residential conditions and appropriate care.

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