Unique curved backrest and extra large steel seat for extra comfort overall h x w x d 754 x 465 x 518mm seat height 463mm chairs supplied in packs of 4 join 2 chairs together to form rows 2 locks are required to join a pair of chairs further upholstery options are available on request pira medium hazard conforms to bs en15373 2007 test level 3 severe contract use