Yale CRR 8802FL-626 Privacy Function Mortise Lock

when it comes to mortise lock there are a range of different sizes security levels and functions which you need to consider follow these easy steps to replace your mortise lock for purposes of this video we are showing a Yale British standard 5 lever deadlock tools required ruler crosshead screwdriver chisel and hammer mortise locks are sized by the depth of the lock box and the rectangular hole the mortise into which the lock fits first you need to check the size of your existing lock to do this without removing it from the door measure the distance from the center of the keyhole to the edge of the door if the distance is 45 millimeter you will need a 64 millimeter or 2.5 inch mortise lock if the distance is fifty seven millimeter you will need a 76 millimeter or three-inch mortise lock remove the escutcheon from the door using a small crosshead screwdriver remove the two screws in the