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Mortise Locks Mortise lock cylinder mostly found in commercial building and condos. There are many types, but they all work the same.

There is a wide variety of mortise locks and rim locks for both residential and commercial properties. However, there are major differences between a mortise cylinder and a rim cylinder.

Although there are so many variations of these two cylinders available on the market, there is a difference. However, it may not be obvious at first glance. If you are working in the field, you may be able to tell the difference with the naked eye. However, most people need to take out the cylinder to figure out its type.

The mortise cylinder has threading on the outside that threads into the lock body when you rotate the cylinder. The tailpiece of a mortise cylinder is circular in shape and has a small rectangle that comes out of it. The tailpiece is also flush against the back of the lock. Perhaps the most obvious thing that tells you that a lock has a mortise cylinder is the hole that is cut into the side of the door.

The mortise lock fits perfectly into this hole. Without the hole, you would be dealing with a rim lock. The bolts are bigger on a mortise cylinder lock, so it is more durable and also more secure. It is also able to withstand a higher number of operations than a rim cylinder.

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