Doormaster Multi-Point Universal Replacement PVCu Lock YDM-UNI-PVCu-35 - Yale Locks YDM-UNI-PVCU-45, Yale DoormasterUniversal lock uses the latest patented technology from Yale to ensure security and simplicity of installation. It is designed to replace 100% of PVCu door locks with a 35mm or 45mm backset and a 16mm faceplate. The revolutionary new range means that if a multi-point lock is broken, the lock - rather than the whole door - can be replaced. The one-piece mushroom rollers ensure smooth operation and help prevent separation. These easily adjustable rollers create a weather-tight seal to protect the interior of homes against the elements and help to keep warmth in. The centre hook protects against attack, and helps in preventing separation. Doormasteris supplied with a fully assembled one-piece keep, which includes the patented Uni-packersystem for fast, easy and reliable installation. Fixing tabs make fitting easy and more secure. Doormasterlocks are suitable for m