UNION C-Series 3G135 Detainer Deadlock

The UNION C-Series 3G135 (formerly known as Chubb) 'Fortress' Detainer Mortice Deadlock is a heavy-duty, high-security deadlock designed for timber doors up to 50mm thick. Renowned for its robust construction, this 5-detainer lock offers exceptional resistance against forced entry, drilling, picking, and sawing.

The lock features a solid brass deadbolt with a 14mm throw, reinforced with hardened steel rollers to prevent hacksaw attacks. It is supplied complete with matching escutcheons and three keys featuring a unique, high-security cranked bitting design. This special key profile is exclusive to the UNION C-Series, providing enhanced key control.

For added versatility, the 3G135 is approved under EN1634-1 for use on 60-minute timber fire doors, making it suitable for both commercial and residential applications. Please note that this model is not interchangeable with other detainer range locks. A double pole micro-switch version is also available to special order for integration with alarm systems.

Technical Specifications

• Brand: UNION C-Series (formerly Chubb)
• Mechanism: 5 Detainer
• Backset: 44mm
• Case Depth: 73mm
• Case Height: 122mm
• Forend Dimensions: 178mm (L) x 25mm (W)
• Bolt Throw: 14mm
• Door Thickness: Suitable for timber doors up to 50mm
• Finish: Satin Chrome
• Keying: Keyed to differ (74,000 differs)
• Keys Supplied: 3 keys with special cranked bitting
• Fire Rating: EN1634-1 approved for 60-minute timber fire doors

Key Features

• High Security Detainer: Features a robust 5-detainer mechanism offering up to 74,000 key differs.
• Attack Resistant: Force-resistant, anti-drill, anti-pick, and anti-saw design with hardened steel rollers in the brass deadbolt.
• Exclusive Key Profile: Supplied with three keys featuring a unique cranked bitting design exclusive to UNION C-Series.
• Fire Door Approved: Certified under EN1634-1 for use on 60-minute timber fire doors.
• Complete Kit: Supplied complete with matching escutcheons and all necessary fixings.
• 15-Year Guarantee: Backed by a comprehensive 15-year manufacturer's guarantee for peace of mind.