Wall mounted ventilation fan NF-740

Wall mounted ventilation fan NF-740,negative-pressure fan,ventilation fan 1.Description of product: modelfandiameter(mm)motor/fanbladerotatespeed(r/min)airflow(m3/h) noisedB(A) power(kw) voltage(v) weight(kg) NF-740 580 1400 8000 65 0.5 380/220 30 outersize(mm) frequency effectivearea(m2) fanbladematerial airpressure(Pa) blowingdistance(m) housingmaterial / 740*740*300 50 20-30 highstrengthmetal 120 20 galvanizedsteel/ powdercoating / 2.Feature: a)lowcost,lownoise,goodventilationeffects,strongairflow,saveenergy,longlast, highefficiencyarethestrengthofourproduct. b)Italsohastheautoopen-shutfunctiontoachievethewaterproofanddustproofeffect. c)Itisthebestchoiceforventilationandcoolingforyourmodernworkingshop. 3.Workingprinciples: Bypumpingtheairwithnegativepressure,thefanscirculatetheindoorandoutdoor freshairanddriveouttheheatandodorintheworkshop.Whentheindoorairhas beenexhausted,theoutdoorfreshairwillautomaticallyflowintothebuildingby thenegativepressureeffect,whichhelpstolowertheindoortemperature. Can be combine with cooling pads to form vertical ventilating and cooling system,which in the inexpensive and effective cooling measure in summer. The cooling pad we produced are widely used in industrial workshops,greenhouse,gardening,etc. Our products enjoys high reputation at home & abroad. If you have interest,please contact us without delay. And welcome customers to visit our factory and place the order.