OFM 640-G Lumbar Support Posture Task Chair, Lock tilt/swivel mechanism, Gas lift height adjustment, 7 position adjustable height arms, 250 lbs. weight capacity, 21" W x 19" D Seat Size, 21" W x 25" H Back Size, 17" - 21" H Seat Height, Smooth 360 degree swivel, Gray Color, UPC 811588015023 (OFM640 OFM 640 OFM-640 OFM640239 OFM-640-239 OFM 640 239 OFM640G OFM 640 G OFM-640-G)

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