Innovative design features a perforated back that promotes maximum air flow and comfort. Built to last, this durable seating is backed by two extensive warranties—lifetime on the pneumatic cylinder and 15-years on everything else. Single paddle control raises seat to a comfortable working height. 18"Wx16"D, 2-1/2" thick seat; 18-1/2"Wx12"H, 1-1/4" thick back. Meets or exceeds ANSI/BIFMA standards.