In the instances where a top hung door cannot be used, if the weight of the door can’t be supported from above for example, a door with a bottom rolling system will be advised.

Unlike top hung doors, the main sliding system is on the bottom of the door in the form of two rollers which run on a track. Bottom sliding doors also incorporate two guides at the top, running in a guide channel. More force is required to open the door due to the weight of the door being concentrated on the bottom wheels.