The heavy-duty exhaust fans from Havells are built around an Energy Efficient motor with dynamically balanced impellers for smooth and vibration-free operation. Moreover, the turbo profile blades provide higher air delivery. Also, the Aluminium pressure die-cast motor shell with fins ensures better heat dissipation resulting in a cooler motor. Also, they come fitted with a pre-lubricated double ball bearing for maintenance-free running generally conforming to IS 2312-1967.
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URL:https://www.havells.com/en/industrial/heavy-duty-fans/exhaust-fans/heavy-duty-exhaust-fan.html
