Upgraded 4-Inch Inline Duct Fan with Speed Controller

Powerful Airflow, Quiet Comfort! “This Upgraded 4-Inch Inline Duct Fan with Speed Controller uses a 100% pure copper double-ball-bearing brushless DC motor. I run it for long hours often and my electricity bill hasn't gone up noticeably.” - Michael F. Why Get Our Upgraded 4-Inch Inline Duct Fan with Speed Controller? ✅ Adjustable Airflow: Help exhaust bathroom moisture, grow-tent heat, and attic odors with a listed airflow of 183 CFM. Stepless speed control lets you adjust ventilation to suit your space. ✅ Quiet Ventilation: Keep air moving without an intrusive hum, with a listed noise level of 24 dB or less. Dynamically balanced blades make this fan a practical choice for bedrooms, offices, and other noise-sensitive spaces. ✅ Built for Long Runs: A pure copper brushless DC motor with double ball bearings supports extended operation, with a listed service life exceeding 10,000 hours. The durable ABS housing carries an IPX4 water-resistance rating and fits standard 4-inch ducts. ⚙️ Specifications: Color: Black Item Weight: 1.32 lbs Material: ABS+PC housing Fan Type: Inline Exhaust Fan Power Source: Corded Electric Motor: 100% Pure Copper Brushless DC Motor Bearings: Double Ball Bearings Airflow: 183 CFM Motor Speed: 5000 RPM Speed Control: Stepless Installation Options: Walls, Windows, or Ceilings Compatibility: Standard 4-inch Ducts, Bathrooms, grow tents, attics, garages, workshops, laundry rooms Product Dimensions: 7.24 D x 3.86 W x 3.86 H inches Package Inclusions: 1 x Upgraded 4-Inch Inline Duct Fan with Speed Controller