Triple E showcased its combined chain-driven ERAIL system at LDI with Rose Brand, its exclusive North American distributor. ERAIL is a compact, profile extruded aluminum track with a range of component parts available that enable it to be used for all but the heaviest professional main stage curtains. Operation is almost silent by the use of ball-raced nylon wheels. If a cord system is required, the setup uses the same standard matte black pre-stretched polyester cord used on other Triple E tracks. Hand or motorized winches are available for operating the system, or it can function via a tensioned floor pulley. It can be rolled to any radius; the minimum is 1'8" (500mm), stocked in 20' (6.1m) lengths. The external dimensions are 1"x1½" (25x37mm). The track is configured as an I-beam lower section with a Tee slot above. The carrier wheels run between the flanges of the beam.