What is the difference between a four-leg and sled-base stacking chair?

Four-leg stacking chairs have four individual legs (two front, two rear) and stack directly vertically — each chair sits slightly above and behind the previous in the stack. They typically stack 6–12 units high on standard 4-leg chair stacking racks or directly. Sled-base stacking chairs have two continuous curved steel runners (the sled) instead of four separate legs. Sled-base chairs can also stack but often at lower heights per column (4–8 units). Sled bases are visually more contemporary and work well on carpeted floors (the continuous runner distributes weight). Four-leg chairs are more traditional and may stack higher on dollies. OfficeFurniture2go.com carries both configurations — call 1-800-460-0858 for help choosing the right base style.