A french door lock is a kind of door stopper.
When the lock is broken, it can open a door.
The lock can be made of metal, plastic or ceramic.
The key is usually located on the side of the door.
Door locks are often used for windows, doors, doors with no door locks and door locks with multiple locking mechanisms.
These locks can be extremely difficult to open, because they require careful movement of the key.
The locks can also be difficult to find because the key is not always visible.
If you are looking for a French door lock that does not require a key, try this guide.