VEVOR 4-Inch Inline Duct Fan with Sm (MSRP $71.90)

Updated August 11, 2026

THIS UNIT IS OPEN BOX, INSPECTED - This VEVOR inline duct fan and smart controller are in like-new condition and fully functional with all accessories included. KEY ISSUES (READ FIRST): - NO MAJOR ISSUES. CONFIRMED WORKING: - Fan blades spin smoothly with no resistance - Power connectivity and smart controller integration function properly - Fan speed adjustment and control settings verify successfully - Temperature and humidity probe records and transmits data - Complete package contents verified IN THE BOX: - VEVOR 4-Inch Inline Duct Fan - Smart Controller Unit - Temperature and Humidity Probe - Mounting Hardware and Screws - User Manual ABOUT THIS PRODUCT The VEVOR 4-Inch Inline Duct Fan is designed for high-efficiency ventilation, delivering up to 205 CFM of airflow. It features a heavy-duty plastic casing and a mixed-flow design to maintain static pressure and move air efficiently through ducting. This blower is commonly used in hydroponic grow rooms, HVAC transfer, bathrooms, and workshop ventilation setups to regulate heat, humidity, and fresh air intake. This model includes a smart controller that coordinates with an integrated temperature and humidity probe. The system allows for automatic fan speed adjustments based on climate triggers, timer settings, and manual speed controls. It is designed to run quietly while providing continuous, reliable air circulation in environments requiring precise environmental control. SPECIFICATIONS - Brand: VEVOR - Model / SKU: Unknown - Original MSRP: Unknown - Condition Grade: PERFECT ABOUT OUR RETURNS This is a returned product inspected by a warehouse technician. Condition shown is current and was verified through hands-on testing. Search Keywords: vevor 4-inch inline duct fan with sm, vevor, vevor 4-inch, 4-inch inline, inline duct, duct fan, 4-inch, inline, duct, fan, high-efficiency ventilation, ventilation delivering, 205 cfm, heavy-duty plastic, plastic casing, mixed-flow design, maintain static, static pressure, move air, air efficiently, hydroponic grow, grow rooms, rooms hvac, hvac transfer, transfer bathrooms

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