FLEX-I-TRAC® is a light to medium duty cyclorama I-beam type track designed for light to medium weight stage and TV studio curtains, and for enclosing industrial welding booths. This economically priced track unit is supplied for "walk-along" operation only, with no cord, pulleys or master carriers. The track can be curved on the job or at the factory (at additional cost) to virtually any degree on a 2 foot minimum radius. The tracks should be solidly anchored to the ceiling with the use of ceiling clamps or suspended from a pipe backbone. For the most satisfactory track operation, the track should be solidly anchored to the ceiling with ceiling clamps. Uses 1 carrier per foot.