Olson Stacker Chairs feature a sturdy 1/8 thick polymer seat and back shell 7/16 chrome-plated steel frame and chrome sled base. Weight capacity is 300 lb. Stack up to 12 high or 40 on a HON Cart for Stack Chairs. Convenient grip in back makes it easy to transport. 17-1/2 wide x 16-14 back has lumbar support. Seat dimensions are 17-3/4 wide x 18-1/4 deep. Seat is 17-3/4 high from the floor and offers a usable depth of 17 . Each chair weighs 12.5 lb. and meets or exceeds applicable ANSI/BIFMA standards.