BFKK
BFKK 4 Inch Inline Duct Fan Kit Greenhouse
A 4-inch inline duct fan kit delivering 53-183 CFM airflow with stepless speed control and a quiet DC motor
- Stepless speed control adjusts airflow from 53 to 183 CFM
- Pure copper DC motor runs 1450-5000 RPM with 30% better heat dissipation
- Quiet operation at 24-45 dB suits bedrooms and offices
- IPX4 waterproof ABS housing resists impacts and corrosion
- Installs on walls, windows or ceilings for versatile ventilation
4-Inch Inline Duct Fan Kit
This 4-inch inline duct fan kit delivers 53-183 CFM of adjustable airflow for greenhouses, grow tents, and household ventilation. It includes a speed controller for precise air management in heating, cooling, or exhaust setups. The kit suits growers and homeowners needing reliable air exchange. It is not for buyers who need larger duct diameters or higher static pressure for complex duct runs.
100% Pure Copper DC Motor
The fan uses a 100% pure copper DC motor spinning at 1450-5000 RPM with a temperature rise under 20K. This design provides 30% better heat dissipation and 50% lower energy use compared to aluminum alternatives. A lifespan exceeding 30,000 hours supports continuous 24/7 operation in demanding environments.
Speed Controller and Mounting Hardware
The included speed controller enables stepless adjustment from 24-45 dB and 53-183 CFM to match specific ventilation needs. Supplied base, cord, and screws allow quick installation on walls, windows, or ceilings. Standard 4-inch duct compatibility simplifies connection to existing ductwork for bathrooms, attics, or hydroponic setups.
Highlights
- Stepless speed control adjusts airflow from 53 to 183 CFM
- Pure copper DC motor runs 1450-5000 RPM with 30% better heat dissipation
- Quiet operation at 24-45 dB suits bedrooms and offices
- IPX4 waterproof ABS housing resists impacts and corrosion
- Installs on walls, windows or ceilings for versatile ventilation
Specifications
No published specifications for this item yet.
Questions about this item
How much air does the 183 CFM rating actually move in a grow tent?
At full speed the fan pushes 183 CFM or 145 m³/h, enough to exchange the air in a typical small grow tent several times per minute.
What does the DC motor speed range of 1450 to 5000 RPM mean for daily use?
The stepless controller lets you dial the motor anywhere between 1450 and 5000 RPM, so you can match airflow to the exact cooling or odor-removal need without fixed steps.
Will the 4 inch housing fit standard ducting and where can it be mounted?
The 4 inch diameter matches common duct sizes and the ABS housing mounts on walls, windows or ceilings using the included base cord screw.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
