... people, 20",22",24" for bariatrics2. chair frame: steel frame with chrome finish, 16",18" have single crossbar ... castorrear wheelwt.cappacking sizeSW7202116" or 18"steel chrome plating,single crossbarfixedfixed8"PU24"mag wheel ... 18"removabledetachable800x320x930mmSW72027-316" or 18"removableelevating800x320x930mmSW72028-120"steel chrome,double crossbarremovableelevating8"PU24"mag wheel w/ ...