Push back chair having central distance (arm to arm) shall be 20â/21â/22â optional as required. HRC metal sheet used for structure as per IS: 1079 1994. All expose parts shall be spray painted. PU foam of density 50+/- 5 Kg with hardness: 120(+30/-20) Newton used in Seat 50 density & Back PU foam of 32 density with hardness 80(+30/-20) Newton , Upholstered with standerd fabric/Leatherite. ABS cover in seat & back.L-shape wooden arms.