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YS170 Bifold Door Locks 24mm U Channel

ASSA/Yale Securistyle

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Quick Overview

Ideal for narrow door sets the Yale Lockmaster 28mm backset multi-point lock fits into slim sightline profiles and is available in standard 16mm euro groove and 24mm u-channel variants.

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
BS EN 1670:2007 Grade 4 (240hrs. NSST) tested
Tested to a minimum of 100,000 cycles operational lifespan
10 year mechanical guarantee
Made in Britain
Lifetime Security Guarantee*


Unit of Sale Configuration Backset Product Availability Qty
Each 24mm U channel 28mm B/S Std Length YLBF004/28-19 Master lock 28mm b/set, 24mm u-channel, std length Box of 5 Locks In stock
Each 24mm U channel 28mm B/S Long Length YLBF005/28-19 Master lock 28mm b/set, 24mm u-channel, long length Box of 5 Locks In stock

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