Circulation Task Chair adds a unique, modern element to any environment. The sleek design features a perforated pattern for excellent ventilation. Seat and back are injection-molded polypropylene contoured to provide a comfortable fit. Seat features a 16-degree slope to provide natural support and adjusts in height from 17" to 20". Seat measures 17-3/4" wide x 18" deep. Back size is 15-1/2" wide x 21-1/2" high. The five-star base is equipped with 2" casters for easy movement. TAA-compliant chair assembles in less than 15 minutes. Optional arms (sold separately) are made from 7/8" tubular silver steel. Chair offers Greenguard Gold Certification.