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• Made of zinc or galvanized, heavy-gauge steel especially for barns and outbuildings where rough, heavy-duty use is required.
• Consists of a hanger similar to a four-wheel trolley with a box-shaped track that acts as a guide.
• Use either roll or ball bearings. Ball bearings are considered the superior choice.
• Capable of supporting loads from 100 lbs. to 3,000 lbs.
• The track is usually mounted to the building by brackets, although some track requires no brackets and is mounted directly to the building with screws.
• Other hardware includes flush pulls, bow handles, stay rollers, bottom guides, bumper shoes and end stops.