... to NO.2.8, 3.15, 3.55, 4, 4.5, 5, 5.6, 6.3, 7.1 ... , storage, chemistry, medicine, military facilities, etc.4,Be used for ventilation and air the laboratoryFeatures1,Explosion ... adjusted flexibly as per user different requirements.4,Impeller installation using symmetrical type to ventilate ... ,Rated voltage:AC 220/380V3,Ingress thread specification:G3/4"4,Cable's outer diameter:Φ9mm~Φ14mm5,Compliance with ...