Carriages, trolleys, rollers and guides for cavity sliders, internal timber sliding doors, top-hung hanging doors and bi-fold tracks. Heavier duty than window hardware, sized by carriage length and load rating. Timber doors carry more weight than an aluminium sash, so check the rating against the door weight rather than matching on size alone.
Not sure which one? See the Sliding Door Roller & Carriage Buying Guide, look up a part number in the roller part number finder, or browse all rollers and carriages.