bids are invited for supply install commissioning and testing of commercial air curtain of size 40x78 unit - supply install commissioning and testing of commercial air curtain of size 40x78 unit for prevention for dust and conditioned air losses single phase 220v 50hz made out of ms/crca sheet of minimum thickness 18 guage finished with two coats of red oxide primer and final coat of syntheticenamel paint oven baked with ms- crc 18 guage square perforated suction grills aluminium alloy fans and single phase electric motor nozzelstic complete with fittings and accessories so as to product 1-1.5 m/sec air velocity at floor level for door opening as specified complete all as directed by engineer- in-charge, supply and fixing of sheet metal enclosure single pole and neutral with a two pin and each metal plug and socket complete with one single pole mccb 240 volt 20 amps completed all as directed by engineer-in-charge. supply and fixing mcb sp 06 to 32 amps 230 volts c curve 50hz ac 10ka complete all as directed by engineer in charge. supply and fixing submain wiring with two runs of 4 sqmm pvc insulated unsheathed single core multistranded 1100 volts copper conductor cable drawn in and including 25/32mm wide pvc casing and caping with all accessories such as tees, elbows, junctionbox, reducer etc as required along with 1 run off 2.5 sqmm pvc insulated, unsheathed, single core, multi stranded copper conductor cable as continous earthwire and connecting to existing main switch board- distrribution board and testing on completion including taking down old submain wiring of any type with conduct complete all as directed by engineer _in charge.note 2runs of 4sqmm cable 1 run of 2.5 sqmm pvc insulated total quantity : 1