24mm U-Channel

Britain's best-selling lock range has been extended to include a 24mm u-channel variant designed for modern aluminium bi-fold doors and features Lockmaster's signature hook and anti-lift pins.

Locking Points 

  • Lockmaster® signature hook and anti-lift pins
  • Deadbolt centre with an easily reversible latch bolt to minimise stock requirements
  • Lockmaster® two hook and anti-lift pin variant
  • Passive mechanism for French door application is available
  • 28mm backset with PZ92mm centre case
  • Combined 3 piece keep
  • 2 lock lengths to suit a variety of door heights


  • 24mm U-Channel
  • Yale Branded


  • PAS 24:2016 security tested
  • Corrosion tested to BS EN 1670:2007 Grade 4 (240hrs. NSST)
  • Endurance tested to  100,000 cycles 
  • 10-year Mechanical Guarantee
  • Made in Britain

Included within the Yale Lifetime Security Guarantee*

*Terms and conditions apply


Material Specification 

  • Lock Case: Galvanised Mild Steel
  • Faceplate: Mild Steel CS4 - ST2473
  • Deadbolt and Latchbolt: Zinc Alloy Casting
  • Keeps: Mild Steel, BZP and Clear Trivalent


Locks: 5 locks per box


Yale recommends that all moving components are lubricated using non-acidic mineral oil at least twice a year and surface cleaned with a damp cloth. The product may need to be adjusted to ensure satisfactory operation.

Product Options
Master lock 28mm b/set, 24mm u-channel, 2 hk & antilift pins- standard length
Master lock 28mm b/set, 24mm u-channel, 2 hk & antilift pins- long length
Adjustable (3 piece) one piece keep LH
Adjustable (3 piece) one piece keep RH