Mortice locks, usually installed into a wooden door, are generally good quality, sturdy, durable locks with many security benefits and functions. They are very secure due to the deadbolt being incorporated into the body of the lock, which is where the name Mortice comes from. Mortice is the term for a cut, groove or hole cut into a part to be received by a tenon with the same dimensions. Given that this groove needs to be carved into the side of the door in order for the body of the lock to be installed; installation is much trickier and requires skill and precision. Although more expensive than cylinder locks, they are a popular choice throughout the UK as well as the rest of Europe.