... fan Axial fan, Axial Flow Fan, Ventilator, Ventilation, Ventilating Fan, Ventilation, Anti-explosive mine ventilation fan Axial fan, Axial Flow Fan, Fan, Ventilator, Ventilation, Ventilating Fan, Ventilation, Ventilator Fan ... level up to 50 mg/m3 and relative humidity up to 95% (at +35 OC). ... air temperature from -20 0C to +35· relative humidity of ambient air,% at temperature +350C, (GOST ...