Wardrobe and sliding doors
Any door could be used for a wardrobe, but doors specifically made for wardrobes are usually made 1800mm tall. This is to enable doors of 400mm tall to be added as top box doors which when combined and built into an appropriate frame will fill the height of most domestic bedrooms.
Any door can be made to slide using the appropriate sliding door gear. The gear required will depend on the use, size and weight of the door.