British Standard 5 Lever Roller Sashlock – Chubb Retro Fit 3K74

The British Standard 5 Lever Roller Sashlock – Chubb Retro Fit 3K74 is a high-security mortice lock designed specifically for replacing existing Chubb 3K74 roller sashlocks without additional door modification. Tested and certified to BS 3621:2007 and BSI Kitemarked, this lock is suitable for external residential doors where insurance-approved security is required.

Featuring a roller latch for smooth door operation and a solid brass deadbolt for enhanced strength, this sashlock provides dependable security while maintaining ease of use.

Key Features

• British Standard 5 lever roller sashlock
• Chubb 3K74 retro fit replacement
• Tested to BS 3621:2007
• BSI Kitemarked for insurance compliance
• Roller latch for smooth and consistent operation
• Solid brass deadbolt for enhanced security
• Supplied with 2 brass keys
• Suitable for external residential doors

Available Sizes

• 67mm Case
• 80mm Case

Finish

• Polished Brass
• Satin Stainless

Specifications

• Product Type: British Standard 5 Lever Roller Sashlock
• Standard: BS 3621:2007
• Certification: BSI Kitemarked
• Case Sizes: 67mm, 80mm
• Latch Type: Roller Latch
• Deadbolt: Solid Brass
• Keys Supplied: 2 Brass Keys
• Finish: PVD
• Application: External residential doors

Packaging Information

• Pack Quantity: 1 sashlock per box
• Contents: Roller sashlock and 2 brass keys