Frame:extra thick galvanized steel sheet,one-off molded,high strength,anti-corrosive and durable.
Blades:made of high quality stainless steel by CNC TURRET PUNCH PRESS,specail design of blade shape ensuring big air flow,no distortion,no broken,passing the homeostasis test to ensure the air volume keeping the same as the beginning during the operational life span.
Siemens motor or Chinese famous motor can be chose,energy-saving and high efficient with ccc certificate.Protection class:IP55,insulation class:F.The voltage,power,frequency and phase can be customized.
Shutter:made of high strength galvanized steel sheet,dustproof and waterproof,flexible operation.
Bearing:the bearing adopts special waterproof design of double-row bearing,high intension,low noise,maintenance-free and long service life.
