Ergonomic swivel chair, back rest height 680 mm, upholstered back rest, black seat cover. Supplied = flat pack. Cover material = Trevira CS, flame retardant. Colour of covering = black. Back rest colour = black. Frame colour = graphite black RAL 9011. Frame material = nylon. Seat mechanism = synchronous mechanism. Frame design = with castors. Height adjustment range = 430 - 510 mm. Type of arm rests = without arm rests. Back rest height = 680 mm. Fittings = lumbar support. Seat depth = 480 mm. Seat width = 480 mm. Shape of seat shell = lumbar support seat. Conforms to = fire safety standard EN 1021, part 1 + 2. Model = upholstered back rest. Design of castors = castors for soft floors. Max. load = 110 kg. Period of use/day = up to 8 hours. Product type = ergonomic swivel chairs. Two back rest versions. Flame resistant covering. Synchronous mechanism. Frame in graphite black RAL 9011. Castors for soft floors as standard. Easy care fabric cover. Back rest upholstered in the same colour as the seat. Seat and back rest with flame retardant, Trevira CS fabric covering. Meets fire safety standard EN 1021, parts 1 + 2. Supplied flat pack - easy self-assembly. Your advantage Comfortable ergonomic seat with knee roll, seat mechanism is adjustable to individual body weight. Back rest with incremental height adjustment. Upholstered back rest in same colour as seat.