Attractive KFI Stool offers functionality and durability. Polypropylene seat is supported by a solid metal bracket welded to a steel frame for maximum support. 18"Wx18"D seat; 19"Wx13-1/2"H back. Pneumatic lift height adjustment raises seat to comfortable working height. Stool includes footring. Add optional arms for even more ergonomic support. Optional glids are also available. Ships unassembled.