COMFORT office swivel chair, height adjustable back rest, charcoal cover. Supplied = partially assembled. Cover material = polypropylene. Colour of covering = charcoal. Frame colour = graphite black RAL 9011. Frame material = nylon. Seat mechanism = synchronous mechanism. Frame design = with castors. Height adjustment range = 430 - 530 mm. Type of arm rests = without arm rests. Back rest height = 520 mm. Fittings = lumbar support. Seat depth = 420 mm. Seat width = 460 mm. Shape of seat shell = flat seat with knee roll. Conforms to = DIN EN 1335 part 1 - 3, DIN EN 12527+DIN EN 12529. Design of castors = castors for soft floors. Max. load = 110 kg. Period of use/day = up to 8 hours. Product type = operator swivel chairs. Cubic back rest. Flat seat with knee roll. Synchronous mechanism. Easy care fabric cover, 100% polypropylene. Frame in graphite black RAL 9011. Height adjustable back rest with lumbar support. Castors for soft floors as standard. Supplied flat pack - easy self-assembly.