tender for insulation work of ahu for ac and chilled water plant in ion beam laboratory at iop; 1 removing of acoustic lining on wall and ceiling of ahu rooms with 50mm thick, density 32kg/cu.m resin bonded glass fibre insulation friction fixed in 610mmx610mm frame work made of 25x50x50x50x25mm made out of 0.6mm thick gi sheet u shaped channel and covered with reinforced fibre glass tissue and finished with 0.8mm perforated aluminium sheet etc. 2 supplying and fixing of following thickness duly laminated closed cell nitrile rubber (class “o”) insulation on underdeck after applying suitable adhesive for nitrile rubber.the joints shall be sealed with 20mm wide and 3mm thick self-adhesive nitrile rubber tape insulation complete as per specification and as required finished with aluminium strip etc. total 50mm thick 32mm+ 19mm 3 32mm thick 4 19mm thick 5 perimeter wall angle 24x24x3 (3mtr long) including self-driven screw. 6 aluminium strip 1 inch including self-driven screw.