Australian designed roller carrier design for s-fold, able to glide smoothly on all underslung tracks, including motorized tracks. Connected carriers will be available by the end of February 2021 with spacing between carriers of 54 mm 100% fullness, 60mm spacing 80% fullness and 80mm spacing 60% fullness. Snap in pendants for s-fold, wave-fold, Evo and pinch pleated headings, can be incorporated to this new system.