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10 best4 Duct Fansof November 2025

112M consumers helped this year.

8% off

1

Aygrochy 4 inch Inline Duct Fan with Temperature and Humidity Controller, Extractor Fan for Booster, Grow Tents, Ventilation and Extractor Fan(UK Plug).
Aygrochy 4 inch Inline Duct Fan with Temperature and Humidity Controller, Extractor Fan for Booster, Grow Tents, Ventilation and Extractor Fan(UK Plug).

Aygrochy

9.8

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2

AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller, Bluetooth App - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics
AC Infinity CLOUDLINE T4, Quiet 4” Inline Duct Fan with Temperature Humidity Controller, Bluetooth App - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

AC Infinity

9.6

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3

MARS HYDRO 4 Inch Inline Duct Fan with Temp Digital Controller Exhaust Fan for Grow Tents Hydroponics
MARS HYDRO 4 Inch Inline Duct Fan with Temp Digital Controller Exhaust Fan for Grow Tents Hydroponics

MARS HYDRO

9.3

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4

Manrose QF100T Quiet Extractor Fan with Timer for 4"/100mm Duct
Manrose QF100T Quiet Extractor Fan with Timer for 4"/100mm Duct

Manrose

9.1

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5

Fantronix TUBE Extractor Fan Easy Operation With Light Switch and Run-on-Timer. Loft or attic, Dimensions: 246mm (L) x 190mm (H) x 167 mm (W), Spigot: 86mm Diameter for 100mm duct connection – White
Fantronix TUBE Extractor Fan Easy Operation With Light Switch and Run-on-Timer. Loft or attic, Dimensions: 246mm (L) x 190mm (H) x 167 mm (W), Spigot: 86mm Diameter for 100mm duct connection – White

Fantronix

8.8

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Related productsUp to 16% off

Anesty Inline Bathroom Extractor Fan 100mm/4 Inch, In Line Duct Fan Mixed Flow 220m3/hr - Grow Room Fan Tent Hydroponic Ventilation System

Anesty Inline Bathroom Extractor Fan 100mm/4 Inch, In Line Duct Fan Mixed Flow 220m3/hr - Grow Room Fan Tent Hydroponic Ventilation System

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DUCTURBO 4 Inch Inline Duct Fans Plastic Housing, 160 CFM Ventilation Exhaust Fan Ideal for Indoor Heating Cooling Transfer Or Grow Tents Air Boosting, With Variable Speed Controller

DUCTURBO 4 Inch Inline Duct Fans Plastic Housing, 160 CFM Ventilation Exhaust Fan Ideal for Indoor Heating Cooling Transfer Or Grow Tents Air Boosting, With Variable Speed Controller

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4Inch 10FT Long Flexible Aluminum Air Ducting, Heavy-Duty Black 4 Layer Dryer Vent Hose, Dryer Duct for HVAC Ventilation,Duct Fan Systems, 2 Stainless Steel Clamps Include

4Inch 10FT Long Flexible Aluminum Air Ducting, Heavy-Duty Black 4 Layer Dryer Vent Hose, Dryer Duct for HVAC Ventilation,Duct Fan Systems, 2 Stainless Steel Clamps Include

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Kair PVC Flexible Hose 102mm External Diameter / 100mm - 4 inch Universal Tumble Dryer, Cooker Hood, Extractor Fan, Air Conditioner Hose - 3 Metre Length

Kair PVC Flexible Hose 102mm External Diameter / 100mm - 4 inch Universal Tumble Dryer, Cooker Hood, Extractor Fan, Air Conditioner Hose - 3 Metre Length

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6

Hon&Guan Aluminium PVC Ventilation Air Ducting 4 Inch Flexible Vent Hose Pipe for Extractor Fan, Hydroponics(ø100mm*5m,White)
Hon&Guan Aluminium PVC Ventilation Air Ducting 4 Inch Flexible Vent Hose Pipe for Extractor Fan, Hydroponics(ø100mm*5m,White)

Hon&Guan

8.6

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7

4 Inch - 100 mm Universal Budget Silent Fan Filter Duct Kit for Grow Tent Quiet Operation Inline Extractor Fan Air Diffuser Hydroponic Carbon Filter Flexible Ducting Smell Odor Temperature
4 Inch - 100 mm Universal Budget Silent Fan Filter Duct Kit for Grow Tent Quiet Operation Inline Extractor Fan Air Diffuser Hydroponic Carbon Filter Flexible Ducting Smell Odor Temperature

BLACK ORCHID

8.3

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8

FanGoFast Smoke Extractor Duct Fan 100mm Inline Duct Fan Exhaust Fan Inline Fan 230V Quiet for Bathroom, Office, Grow Rooms (Black, 100mm)
FanGoFast Smoke Extractor Duct Fan 100mm Inline Duct Fan Exhaust Fan Inline Fan 230V Quiet for Bathroom, Office, Grow Rooms (Black, 100mm)

FanGoFast

8.0

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9

AC Infinity CLOUDLINE S4, Quiet 4” Inline Duct Fan with Speed Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics
AC Infinity CLOUDLINE S4, Quiet 4” Inline Duct Fan with Speed Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

AC Infinity

7.7

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10

Kair White Louvred Wall Vent Grille 155mm External Dimension with Flyscreen and Round 100mm - 4 inch Rear Spigot
Kair White Louvred Wall Vent Grille 155mm External Dimension with Flyscreen and Round 100mm - 4 inch Rear Spigot

Kair

7.4

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