Abstract: A new bottom track assembly for sliding doors such as showers, patios and the like having a plurality of elongated dividers (1) connected and separated by rods (2) at spaced intervals between the dividers (1) to form open tracks (3) between each divider (1). The rods (2) have circular rollers (13) which rotate around the rod when sliding doors are moved between the tracks. This new track assembly allows water and dirt to fall through the dividers, thereby preventing dirt and algae from building up between the tracks, a common problem with conventional track assemblies.