PO500's are an ideal seat for users requiring a large chair with full adjustment. Comes with a heavy duty mechanism and independent back and seat adjustment.
Their features include :
Back Height - 535 mm
Seat Depth - 510 mm
Seat Width - 530 mm
Seat Height - 490 mm to 590 mm
Summary - Chair clips together out of the box, no tools are required.
Recommendations - Very easy to do yourself, if you have the time.