Herman Miller Aeron Chair Classic Lumbar with Spin Adjustment. Carbon Mesh (Gray Chair). We have thoroughly cleaned and refurbished this chair, replacing worn-out parts to restore the chair to like-new condition. We typically replace the casters and the arm pads at the least. If parts show signs of wear, we will reupholster the seat, replace the cylinder, and tune up the mechanism. You will not receive a chair with fabric tears, arm damage, or a non-functioning chair. We make sure that the chairs that leave our warehouse arrive to you in complete working condition. We are always happy to answer any questions you might have. About the Aeron Chair: The updated Aeron chair is ergonomic and designed for a wide range of body types. Its launch was pioneering in the office furniture industry, and it still is. It is enhanced by incorporating ocean-bound plastic into its frame, all while maintaining its position as the ultimate office chair on the planet. Find out why everyone is raving about this chair at a price you can afford. Fully Adjustable Arms (Height, Width, Depth, and Pivot). Composed of recycled materials, the production of Aeron in Onyx helps divert plastic waste from the ocean. Depth: 27.5″ – 28.3″. Width: 28.3″ – 30.4″. Height: 46.75″ – 41.13″. Seat Height: 14.8″ – 22.8″. Arm Height: 7.5″ – 11.5″. Weight Capacity: 350 lbs. Not satisfied with your chair? This chair requires assembly. The estimated time is around 5-10 minutes. Note that these are used chairs.