Feature 1This product has stepless governor, adopt PWM speed regulation which make the speed control more precise. 2Adopt EC motor with 6-stage variable frequency brushless high-performance motor and durable double ball bearings 3The fan operates with low noise, strong suction and large air volume 4Aluminium alloy housing for better pressure resistance and durability, suitable for harsh environments 5The turbo head is made of PBT material, which is not only environmentally friendly but also fireproof. Features: 1. This product has stepless governor, adopt PWM speed regulationwhich make thespeed control more precise. 2. Adopt EC motorwith 6-stage variable frequency brushless high-performance motorand durable double ball bearings 3. The fan operates with low noise, strong suctionand large air volume 4. Aluminium alloyhousingfor better pressure resistance and durability, suitable for harsh environments 5. The turbohead is made of PBT material, which is not only environmentally friendly but also fireproof. 6. The motor adopts pure copper winding, high efficiency frequency conversion 7. Suitable for kitchen, bathroom, bathroom, internet cafe, chess room, health club, beauty crown, solder, warehouse, computer room 8. The motor has overvoltage protection and lock protection function(automatic restart) Specification: Condition: 100% Brand new Voltage: AC 220V 50HZ/60HZ Power: 150W Standard: 10in Color: Blue Air Volume: 1808m/h, 1065CFM MaximumNoise: 65dB Maximum Speed: 3200RPM TurboHead Material: PBT environmental protection Wind Pressure: 510PA Fan Blade Design: Mixed flow Fan Housing: Aluminium alloy Waterproof Rating: IPX4 Weight: 4730 g / 166.8 oz(approx.) Package List: 1 x Duct Fan .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }