Steel folding chairs with deep contoured polypropylene backrest.Convenient hand-hold.Overall H x W x D: 865 x 465 x 572mm.Seat height: 455mm.Chair locks join 2 chairs together to form rows - 2 locks are required to join a pair of chairs.Chairs store compactly on mobile storage trolleys.Conforms to BS EN15373 2007 (Test level 3) Severe contract use.