The Yale Doormaster Universal Multipoint uPVC double glazed door lock is designed to replace any PVCu door lock with a 35mm or 45mm backset. The Yale Doomaster Universal Multipoint replacement unit is easy to install and should be used if your existing multipoint lock model is no longer manufactured. Every Yale Doormaster Universal multipoint door lock comes with a 10 year guarantee. Watch the installation video on this page to see how easy it is to install the Yale Doormaster. Lockandkey.co.uk are on of the UK’s leading suppliers of the Yale Doormaster Mutlipoint lock systems.