You will most likely need one lock per closing door unless they have an overlapping closure where when one is closed it holds the other one shut too.
- Do you have a central bar down the middle where the two doors meet?
- Do you have central shelves in the unit which touch the door when closed?
- Do you have a flat section on the inside where the catch can be installed?
In each of these situations, the catch could go on one of these locations and the hook will connect to this when closed.
Should you need any further assistance, please send a photo of the doors and unit to our friendly customer care team, who will be happy to help you.