Thick 2-ply HR foam back and 3-ply HR foam seat cushion or True Comfort seat cushion plus adjustment features to meet personal support and comfort standards. Adjustable height, fully upholstered back with built-in lumbar support and upholstered seat with waterfall edge. The mechanism provides tension control, independent seat angle with infinite locking control, independent back angle control, forward tilt pivot and pneumatic seat adjustment. Includes 26" 5-star base with 2" dual-wheel carpet casters. Measures 26-1/2"W x 26-1/2"D x 37 to 43"H overall. Available in Fabric Grades I, II, III, IV, V and COM; True Comfort is available only in Grade II Astral fabric. Assembly required.