Heavy Duty Exhaust Fan (9″, 12″, 16″, 18″, 24″, 36″)

• Strong shape, and it has a long service life
• Large air flow, low noise, spare electricity power, reverse for ventlation
• Utilizes CAD optimized design for blade, with high efficiency
• With front and back guard, suitable for special installation defend and requirement,
• Suitable for shool, hotel, home ect. for ventilation