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White plastic 4-inch inline duct fan with speed controller, compact cylindrical housing

Hon&Guan 4 Inch Inline Booster Duct Fan 130 CFM 6W Speed Controller

SKU CH-ENSM-AWXRV

A 4-inch inline booster duct fan delivers 130 CFM airflow at 26 dBA with a variable speed controller for adjustable ventilation

  • Airflow rate130 cubic feet per minute
  • Motor RPM4,500 rpm
  • Fan speed4,500 rpm
  • Rated voltage125VAC
  • Phase240 V, ac dc
  • Amperage40
  • Delivers 130 CFM airflow at only 6 W power draw
  • Variable speed controller lets you tune airflow and noise level
  • Quiet 26 dBA operation suits grow rooms and living spaces
  • Compact 7.28 x 3.82 x 3.82 in plastic housing fits tight duct runs
  • 100–240 V AC input with 4500 RPM motor for reliable ventilation

4 Inch Inline Booster Duct Fan

The Hon&Guan 4 inch inline booster duct fan delivers 130 CFM airflow at 4500 RPM while drawing only 6 W from a 100-240 V supply. A built-in variable speed controller lets you adjust airflow and noise down to 26 dBA. The plastic housing measures 7.28 x 3.82 x 3.82 in and fits 4 in ducting for straightforward DIY mounting.

Upgrade from fixed-speed or louder fans

Replace a constant-speed duct fan when you need adjustable airflow without rewiring the controller. The jump is worth it if your current unit runs at full speed regardless of demand or produces noise above 26 dBA. The 6 W motor keeps operating costs low while the 165 Pa static pressure handles typical residential duct runs.

Check duct size voltage and controller access

Verify that your ductwork is 4 in diameter to match the fan spigot. Confirm the supply voltage falls within the 100-240 VAC range and that the circuit can handle the 40 A rating shown in the specifications. Ensure there is space to mount the included speed controller where it can be reached for adjustment.

How it compares

Measured against everything we stock in Industrial, Drum & Tower Cooling Fans, at today’s prices. Recalculated every night.

Price $33.99
Cheaper than about 84% of the 304 comparable items (median $325.49).

Specifications

Performance
Airflow rate130 cubic feet per minute
Motor RPM4,500 rpm
Fan speed4,500 rpm
Power
Rated voltage125VAC
Amperage40
Size & build
Main materialPlastic
Mounting styleDIY
More details
Phase240 V, ac dc
Fan typeExhaust fan

Questions about this item

What duct diameter does the 4 inch inline booster fan connect to?

The fan is built for 4 inch ducting, matching the 4 inch duct size listed in the specifications.

How is the variable speed controller wired into the 125 VAC supply?

Connect the controller inline with the live conductor on the 100-240 VAC circuit, then plug the fan into the controller output.

When should the plastic impeller and housing be cleaned to maintain 130 CFM airflow?

Inspect and wipe the blades and housing whenever dust buildup is visible, typically every few months depending on environment.

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