bids are invited for revolving high back chair colour tan brwon - providing and placing in position high back chair. the cushioned seats shall be made of injection moulded plastic outer and inner. plastic inner shall be upholstered with pure leather and moulded high resiliance polyurethane foamof density = 45±2 kg/m³, and hardness load 16±2 kgf as per is:7888 for 25% of compression. seat size shall be 47.6 cm w x 49.2 cm d. the back shall be cushioned and shall be made up of pu foam with insitu moulded ms erw round tube of size 1.9±0.03 cm x 0.16±0.0128 cm, upholstered with pure leather. back size shall be 47.5 cm w x 77 cm d. the armrest top shall be moulded from polurethane, and shall be upholstered with pure leather and mounted on ot a drop lift adjustable type tubular armrest support made up of ø3.81±0.03 cm x 0.2±0.01 cm thick ms erw tube having chrome plated finish. the armrest hieght shall be adjustable upto 6.5±0.5 cm in 5 steps. the adjustable tilting mechanism shall be designed with the following features : 360° revolving type, front-pivot for tilt with feet resting on ground and contionuous lumbar support ensuring more comfort, tilt tension adjustment can be operated in seating position, 5-position tilt limiter giving options of variable tilt angle to the chair, seat/backtilting ratio 1:2, the mechanism housing is made up of hpdc aluminium black powder coated. seat depth adjustment shall be integrated in the seat through a sliding mechanism. seat depth adjustment range shall be 6.0±0.5 cm. back frame shall be connected to the up/down mechanism housed in plastic t spine. it can be adjusted in the range of 7.42±0.5 cm for the comfortable back support to suit individual need. the pneumatic height adjustment shall have an adjustment stroke of 10±0.3 cm. the pedestal shall be high pressure die cast polished aluminium and fitted with 5 nos. of twin wheel castors. the pedestal shall be 65.0±0.5 cm pitch centre dia. 5 nos. , revolving mid back mesh chair colour b