Square slotted profile equipped with integrated power rails for LED lighted accessories, attaches to ACROBAT carriages or to TONDOQUADRO upright extensions. The upright accepts up to 5 24’’ – 48’’/61 – 122cm illuminated elements and up to 3 72’’ / 183cm illuminated elements. Requires electrical track and Power Unit Supply mounted on ACROBAT rail. Adapter for Electrified Track 24v included, to be ordered separately in case of 3rd party electrified track 220v. UL version includes adapter for Electrified Track 24v with fuse. Warning: Upper and Lower bars must be always mounted and fixed by provided tapping screws to compose a frame. Maximal load of the structures must always be taken into account when determining the layout and quantity of accessories.