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VEVOR Utility Blower Fan, 12 Inches, High Velocity Ventilator, Portable Ventilation Fan, Fume Extractor (12 Inches Blower Fan with Duct)

Size: 8 inch Hose Length: 10 m

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Is it weather proof?

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The waterproof grade is IP44. For safety reasons, it is recommended to use it indoors and not to be directly exposed to rain.

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Can fan be used with Variable Frequency Drive (VFD) to control speed and airflow?

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It is not recommended to connect an external speed control device. If the speed is limited, the amount of air blowing through the motor will be insufficient, and the motor will overheat and possibly burn out.

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Is the fan speed adjustable/adjustable CFM?

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No.

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Are this fan good for attic are they can work 24/7

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Yes.

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Is it explosion proof?

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No, it isn't explosion proof.

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