supply of supply of propeller type ac ventilating , supply of propeller type ac ventilating fan (exhaust fan) of sweep size- 200mm, rated volt age-single phase 230v ac, frequency- 50hz, power consumption- 25w to 40w, air delivery- 450 to 560 cu bic meters per hour, no of blades-05, speed-1275 rpm to 1360 rpm. conforming to is:2312:1967. make/br and- havells/crompton/usha/bajaj. note-firm should submit the purchase proof of material from oem or its authorised dealers at the time of supply of material. [ warranty period: 30 months after the date of deliv ery ] ] , supply of heavy duty industrial exhaust fan, four blade, metal body, sweep-300 mm, speed- 1300 to 1400 rpm, air delivery: 1250 to 1600 cubic meters per hour, power consumption-70w to 90 w, op erating voltage-single phase 230v ac, frequency- 50 hz, conforming to is: 2312:1967, make/brand- havell s/crompton/usha/bajaj. note-firm should submit the purchase proof of material from oem or its authorised dealers at the time of supply of material. [ warranty period: 30 months after the date of delivery ] ]