Supply and etc- centrifugal fan with motor 240000 cmh , supply and etc- - pre filter , supply and etc- - fine filter , supply and etc- - gss duct sheet - 24 g - ventilation system , supply and etc- - gss duct sheet - 22 g - ventilation system , supply and etc- - gss duct sheet - 20 g - ventilation system , supply and etc- - gss duct sheet - 18 g - ventilation system , supply and etc- - supply and etc- air grill with vcd , supply and etc- - volume control damper , supply and etc- - motorized fire damper , supply and etc- - motorized actuator for fire damper , supply and etc- - non return damper , supply and etc- - air intake louvers , supply and etc- - pressure relief damper , supply and etc- - gravity damper , supply and etc- - exhaust air grill , supply and etc- - axial flow supply and etc- fans - 4000 cmh , supply and etc- - axial flow exhaust fans - 10000 cmh , supply and etc- - axial flow exhaust fans with flp motor - 7500 cmh , supply and etc- - propeller exhaust air fans -1000 cmh , supply and etc- - mcc cum power distribution board , supply and etc- - wall mounted fuse board , supply and etc- - measuring instrument , supply - maintenance tools and tackles , etc- cable laying alongwith accessories , spares- v-belts of each type for centrifugal fans , spares- blower bearing sets of each type for centrifugal fans , spares-blower motor bearings of each type for centrifugal fans , spares-seal gasket and other wear out parts in sets of each type for centrifugal fans , spares-vibration isolators of each type for centrifugal fans , spares-fan bearings of each type for axial fans , spares-fan motor bearing of each type for axial fans , spares-dry filters of each type and size for axial fans , spares-terminal plates , spares-heaters for motor , spares-greasing arrangements , spares-motor of each type and rating , spares-bearings de and nde for each type and rating of motor , spares-each type of lamps, pbs, ilpbs, fuse, mcb,mccb used in the equipment system , spares-measuring instruments , spares-leds for indicating lights , spares-control circuit fuses,mcb,mccb,semiconductor fuses , spares-relays modules and contactors boq title supply of ventilation system to tangedco ennore ss