The Willenhall " Wil-Lok" M1C is a 5 Lever Mortice Dead Lock that comes in slightly larger case sizes to usual. This makes them a popular choice for replacing old locks measured to imperial measurements. You have the choice of a 67mm case size
- which is slightly larger than a typical 2.5" lock
- which has a 40mm backset; & an 80mm case size
- whic..