Open Up high-back is a modern take on the executive chair. An innovation in seating, the trim profile in elegant mesh expands your comfort zone with advanced features in ergonomic design. Eases movement, minimizes back strain and supports bodies at rest or in motion; the synchronized tilt with accessible side tension control and the generous recline with multiple tilt-lock positions provide easy, natural adjustments and extraordinary comfort. Overall Dimensions: W 26 1/2", D 28 3/4", H 48 1/2", Seat Height 17". See Knoll website for seating options. GREENGUARD Certification