There's an art to smart seating, and the Nucleus task chair from HON has it down to a science. With a deep-cushion hammock seat designed for even weight distribution, breathable four-way stretch mesh back, and easily adjustable lumbar support, the Nucleus task chair is great for anyone who demands intuitive performance, all-day comfort, and outstanding support. Make your space work with HON Nucleus. This attractive and comfortable task chair delivers sleek style to any office or collaborative environment. Four-way stretch mesh back in black, Centuriongray fabric seat, and black frame. Give your back a break with intuitive adjustable lumbar support. Overall dimensions: 42. 75"H x 29"W x 29"D. Seat dimensions: 16. 25"-20. 13"H x 18. 75"W x 18"D. Back dimensions: 24"H x 18. 63"W. Height- and width-adjustable arms provide a custom fit. Rated for up to 300 lbs. Full assembly required. Meets or exceeds the BIFMA standards. Advanced synchro-tilt mechanism puts you in total control of your recline and comfort. Hard casters roll quietly and effortlessly. Stay cool and comfortable with the breathable four-way stretch mesh back that cradles every pressure point. Tilt tension controls the rate and ease of recline. 360-degree swivel provides freedom of movement in any direction. Pneumatic seat height adjustment moves the seat up and down to adapt to various body heights. Lifetime limited warranty; 12-year warranty on four-way stretch mesh and seating controls. Model Option: HNR1KD. Y2. STC. A. H. IM. CU22. BL. SB. T.