Product Introduction Our company's FY4-75-11 type FRP centrifugal roof ventilator is widely used in ventilation systems for industrial and mining enterprises such as chemical, light industry, food, metallurgy, and electrical machinery, as well as in hotels, restaurants, medical and sports facilities, civil buildings, and laboratories. The main features of the ventilator include corrosion resistance, low noise, and reliable operation. The motor adopts an outer rotor and inner stator structure, providing low noise and stepless speed regulation. Both the ventilator casing and impeller are made of FRP material, offering a compact structure, light weight, aesthetic appearance, economic durability, and easy maintenance. Product Features | Model NO | Speed (rpm) | Pressure Adjustment (mmH?O) | Airflow Range (m3/h) | Motor Model | Motor Power (Kw) | Noise dB(A) | Weight (Kg) | |----------|-------------|-----------------------------|----------------------|-------------|------------------|-------------|-------------| | 4 | 200～850 | 4～18 | 2500～650 | YDW0.55-6 | 0.55 | 55 | 50 | | Rated Speed | 750 | 10 | 1500 | | | | | | 5.6 | 200～850 | 4～35 | 6500～1200 | YDW0.8-6 | 0.8 | 60 | 75 | | Rated Speed | 750 | 20 | 4000 | | | | | | 6.3 | 200～850 | 4～56 | 13500～2500 | YDW1.8-6 | 1.8 | 65 | 95 | | Rated Speed | 750 | 24 | 6000 | | | | | | 7.1 | 200～850 | 4～56 | 13500～2500 | YDW3.0-6 | 3.0 | 70 | 120 | | Rated Speed | 750 | 30 | 8500 | | | | | Note: The voltage used is 380V.