Professional Replacement Lock

Yale Doormaster™ Professional is a High Security replacement lock designed to replace 100% of locks with top and bottom hooks or bolts, a 35m or 45mm backset, and a 16mm or 20mm faceplate. With three hooks and two rollers, the Doormaster™ Professional has been tested to the Police Approved Secured By Design standard and is PAS 24 door set capable.  Designed with the professional installer in mind, this lock includes Crop and Mate technology to maximise the scope of installation.  Several patented features plus the variety of faceplate widths makes the Professional Lock the ideal choice where a higher level of security is required - regardless of door material



  • Replaces 100% of locks with top and bottom hooks or bolts, 35 or 45mm backsets, and 16 or 20mm faceplates
  • Designed for installation by professionals
  • Cut and mate to suit the door
  • Supplied with pre-assembled keeps using the patented 'Uni-packer' system for fast, easy, and reliable installation
  • Variants available for PVCu, Timber and Composite doors
  • 3 Hook Bolts for High Security anti-separation
  • Fixing tabs for easy and secure fitting
  • Rounded ends for safe installation
  • Designed and tested to Police Approved standard 'Secured By Design' and PAS 24 door set capable



  • Available with 35mm or 45mm backset
  • 92mm centres
  • 16mm and 20mm faceplate variants
  • Supplied with pre-assembled keep set and all fixings
  • Supplied with split handle spindle for optional night latch function
  • Endurance tested to 50,000 cycles 
  • Corrosion tested to BS EN 1670:2007 Grade 4 (240hrs. NSST)
  • 10-year Mechanical Guarantee 
Product Options
Professional 35mm replacement lock for PVCU doors
Professional 45mm replacement lock for PVCU doors
Professional 45mm replacement lock for Timber and Composite doors