UNION 3K74 Rebate To Suit 3K74, 3K74E & 3K75 Sashlocks

The UNION 3K74 Rebate Kit is a precision-engineered accessory designed to allow UNION (formerly Chubb) C-Series 3K74, 3K74E, and 3K75 mortice sashlocks to be fitted securely to rebated double doors. Ideal for timber French doors or double doors with an overlapping rebate, this kit ensures a flush, professional, and secure finish.

Because the compatible sashlocks feature a roller latchbolt, this rebate kit is fully reversible and suitable for doors hung on either the left or right hand, requiring no complex modifications during installation. It is designed for doors with a standard 13mm rebate depth.

This rebate kit is available in multiple finishes and weights to match your existing door ironmongery. Please select your preferred finish and specifications from the options below.

Technical Specifications

• Compatibility: Suitable for UNION (formerly Chubb) 3K74, 3K74E, and 3K75 mortice sashlocks
• Rebate Size: 13mm
• Finishes: Available in Polished Brass or Satin Chrome (please select from the options below)
• Weight: 240g - 250g (please select from the options below)
• Handing: Reversible (suits both left and right-hand hung doors)

Key Features

• Seamless Integration: Allows compatible mortice sashlocks to be fitted to rebated double doors
• Reversible Design: Suitable for left and right-hand hung doors without modification
• Professional Finish: Provides a flush, neat, and secure installation on overlapping timber doors
• Premium Finishes: Choose from Polished Brass or Satin Chrome below to match your door hardware