Chair mechanism Centre pivot mechanism Type of locking Tilt limiter Number of arm movement N.A Pedestal Base Nylon base Armrest Material Polypropylene Seat material Pressed and moulded with PU foam Backrest is made of One piece injection moulded frame Density of PU foam used in seat KG per Cu Meter (± 3) 50 Density of PU foam used in backrest in KG per Cu Meter (±3) N.A Backrest upholstered with Inner frame Upholstered with Mesh fabric and mounted on main assembly Seat upholstered with Foam laminated mesh fabrics GSM/Thickness of fabric ±5%(Gram/Square meter) 290 gram Overall width (±10 mm) 570 mm Backrest Height ±15 mm 520 mm Backrest Width ±10 mm 500 mm Seat Height ±10 mm 500 mm Seat Width ±10 mm 520 mm Seat Depth ±10 mm 390 mm Thickness of MS Plate Joining the under structure with Seat 0.4 mm Thickness of Plywood used in Seat ±1(mm) 15 mm Thickness of Plywood used in Backrest ± 1(mm) 15 mm Pedestal Size (Diameter in mm) ±10 mm 620 mm Thickness of Polyurethane Foam Used in Seat in mm (±2 mm) 30 mm Thickness of Polyurethane Foam Used in Backrest in mm((±2 mm) 30 mm Warranty period in number of years 1-year