BESTEEL® is the most famous name in medium duty stage tracks. The Model 170 steel series is used on the majority of stage installations with medium or light weight curtains with lengths up to about 36 feet. On slightly heavier installations, Models 171-N or 171-R can be used. The cord operated 170 and 260 Series tracks cannot be curved. Model 173, which is for "walk-along" cyclorama and gym divider curtains can be outfitted with pre-manufactured curved sections, available below. Uses 1 carrier per foot.