VEVOR Portable Ventilator, 12 inch Heavy Duty Cylinder Fan with 16.4ft Duct Hose, 560W Strong Shop Exhaust Blower 2894CFM, Industrial Utility Blower for Sucking Dust, Smoke, Smoke Home/Workplace

The product description states it has a sturdy steel structure and corrosion-resistant coating for long-term reliability. Customers did not mention anything about continuous operation.

No, it does not have a variable speed control. The ventilator has two fixed speed settings, high and low, which provide 2894 CFM and 2086 CFM of airflow respectively.

The product information does not explicitly mention if the ventilator can be used for positive air pressure. However, it describes the ventilator as suitable for intake or exhaust scenarios, indicating its versatility for different air circulation needs.

I did not find any information about replacement parts in the product description or customer reviews.

Product information does not explicitly mention if the motor is sealed from dust/debris.