Description: 1.Low noise, strong wind flow, high effeciency and windflow stable 2. Color mellowed, brilliant and enduring. 3. Widely used in factory, civilian construction, housetop ventilation. 4. Wind power: 3000-35000m3/h 5. Wind pressure: 85-345Pa Features: SF-Gventilation fan has the characteristics of low noise, strong wind flow, low energy comsuption and rational structure,ect. Technical Parameter Model No.Voltage(V)Power(kw)Revolution(rpm)Air Flow(m3/h)Pressure(Pa)3G-4 12"220/3800.37280030002303.5G-4 14"220/3800.75280060002504G-4 16"220/3800.55143053001665G-4 20"220/3800.75143093001965G-4 20"3801.5143098002106G-4 24"3802.21430187002946G-4 24"38031430195003007G-4 28"38031430245003158G-4 28"38041430300003459G-4 36"3805.5143035000295Application: It is ideal corollary equipment for workshop of chemical industry and light industry, civilian construction and hotel, this series vetilation fan also apply to use in industrial and mining enterprises, workshop, warehouse for summer cooling or vetilation or can be use in pressurizing, air supply, air exhaust for common industrial pipeline and housetop ventilation. Materials: Cast iron blade, 100% copper motorand metal basing. Packing: Carton Package. The voltage and frequency could be customized.