Product feature: gas-assisted injection molding, split seat, spring flipping-up, hanging installation Main materials: polypropylene (PP), high strength aluminum alloy, hot rolled sheet, hot rolled section Dimensional data: seat width X seat depth X seat height 450 X 420 X 800 Sites applicable: various indoor venues Installation requirements: step height 280mm~650mm, step width ≥800mm, center distance 470mm-510mm Optional: armrest, cushion, cup holder, antistatic