Bergerault B2002, Orchestra Chair, Adjustable backrest angle: 11 cm, Adjustable seat angle: From -4 ° to 10 °, Height adjustable backrest: 14 cm, Adjustable seat height: 48 - 53 cm, Weight: 10.5 kg, Stackable (up to 5 pieces), Colour: Black / Black, Fire resistant M1 (BS EN 1021), Seat with cover 360 g / m2 - abrasion class ISO12947, Back: 26 x 40 cm (H x W), Seat (flat): 43 x 41 cm (W x D)