Winkhaus UPVC 4 Hook Keep SetReplacement multipoint door lock mechanism for uPVC and composite door systems.Winkhaus UPVC 4 Hook Keep Set is available from Lockstation for customers who need a reliable replacement or installation part with the correct specification for the job. This product is used on compatible uPVC or composite doors where the multipoint lock strip or mechanism needs replacing. It may help when the original lock has failed - the handle will not operate correctly or the locking points no longer engage as they should. Use the product title - images and measurements together when comparing against an existing item because small details such as backset - centres - fixing positions - finish and profile can decide whether the part will fit correctly.What this product is used forThis product is used on compatible uPVC or composite doors where the multipoint lock strip or mechanism needs replacing. It may help when the original lock has failed - the handle will not operate c