Top 9 Inline Duct Fan 4 Inch – Home Air Purifiers

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VIVOSUN 4 Inch 203 CFM Inline Duct Fan Vent Blower Ventilation Fan for Grow Tent ETL Certified

VIVOSUN #ad - Durable build: galvanized steel parts come factory painted to resist atmospheric corrosion from humidity. Moves air through your target location efficiently for optimal ventilation.

Powerful air flow: heavy hitting blower with a fan speed of 2500 RPM for an air flow of 203 CFM. Tight, precise construction eliminates rattling and reduces wear and tear to give the element a long life. High tech design: the aerodynamically designed centrifugal impeller of this unit delivers strong air flow with a disproportionately low sound profile. Runs smooth and quiet: Powerful fan puts out only 49 dB noise level. Versatile applications: ideal for cooling lighting fixtures or controlling hot and humid conditions in grow tents/rooms. Notice: Without speed controller.
BrandVIVOSUN #ad
ManufacturerVIVOSUN #ad
Weight7.73 Pounds
Part Number306301-4



VIVOSUN 4 Inch 203 CFM Inline Duct Fan with 4"x 14" Carbon Filter Smelliness Control with Australia Virgin Charcoal

VIVOSUN #ad - Effective smelliness control: the carbon filter eliminates some of the most undesirable smelliness, pungent smell and particulates from indoor grow tent, hydroponics grow room.

Moves air through your target location efficiently for optimal ventilation. Free pre-filter included: We recommend replace the pre-filter every 6 months or after completion of each grow cycle. Superior carbon filter: 1050+ rc 48 australian Virgin Charcoal Bed. Versatile applications: Kitchens, Bathrooms, Grow Rooms, Grow Tents, etc. Powerful air flow fan: heavy hitting blower with a fan speed of 2500 RPM; Puts out only 49 dB noise level. Dimensions: 4" x 14".
BrandVIVOSUN #ad
ManufacturerVIVOSUN #ad
Weight8.33 Pounds



VIVOSUN 4 Inch Noise Reducer Silencer for Inline Duct Fan

VIVOSUN #ad - Easy connection: Easy to connect to the air power equipment. Efficient blocking: Stop the spread of sound waves and allow airflow to get through the ducting. Premium material: commercial grade neoprene foam can reduce fan noise by approximately 35%-50%. Unique design: specially designed open cell foam with egg crate pattern is good for superior sound absorption. Application: perfect for reducing noise from fans and carbon filter systems.
BrandVIVOSUN #ad
ManufacturerVIVOSUN #ad

4. Continental Fan


Continental Fan Manufacturing DVK100B-P 152 CFM In-Line Dryer Booster Duct Fan for 4" Ducts from the DVK Collection

Continental Fan #ad - In-line construction to reduce lint build-up. Quiet, powerful, compact; the most user-friendly fan in the industry. Backward curved impeller to overcome long duct runs. Exclusive mounting brackets included for simple installation. Pressure switch will automatically activate booster fan when it senses airflow from the dryer.
BrandContinental Fan #ad
ManufacturerContinental Fan #ad
Height0 Inches
Length0 Inches
Weight11 Pounds
Width0 Inches
Part NumberDVK100B-P

5. Hydrofarm


Green, Hydrofarm Active Air 4 inch in-Line 165 CFM Fan

Hydrofarm #ad - Active air inline duct fans incorporate Brushless thermally protected AC motors with sealed for life bearings will not require any lubrication. Active air inline Duct fans offer innovation & performance at a great price. With a full line of fans to meet your needs, ul-recognized components, Low noise output, high quality molded impeller, all Active Air Fans feature: Durable ceramic-coated metal housing, Includes mounting brackets and 8 foot pre-wired 120V cord.
BrandHydrofarm #ad
ManufacturerHydrofarm #ad
Height11.2 Inches
Length11.2 Inches
Weight9.3 Pounds
Width9 Inches
Part NumberACDF4
Warranty1 year manufacturer.

6. Continental Fan


In-Line Duct Fan 4”, 162 cfm

Continental Fan #ad - Exclusive mounting brackets included for simple installation. 120v operation also available in 220V; contact factory for details. Quiet, powerful, compact; the most user-friendly fan in the industry. Uv and corrosion resistant, durable plastic housing. Speed controllable using optional solid state speed control.
BrandContinental Fan #ad
ManufacturerContinental Fan #ad
Height9.1 Inches
Length10.6 Inches
Weight7 Pounds
Width9.8 Inches
Part NumberAXP100

7. iPower


1-Pack, iPower GLDUCT4X8C 4 Inch 8 Feet Non-Insulated Flex Air Aluminum Foil Ducting Dryer Vent Hose for HVAC Ventilation with 2 Clamps, Silver

iPower #ad - 18℃ ~ 85℃. Ducting size: 4 inches diameter x 8 feet length when fully extended. Thermal endurance: temperature endurance range from 0 ~ 185°F. Wide applications: Kitchens, bathrooms, greenhouses, grow tents, grow rooms, etc. Flexible length for exhaust fan blower/inline fan. Fire proof coating: flexible ventilation ducting made from high-quality flame-retardant aluminum and built-in corrosion-resistant wire helix for reinforcement and lasting performance. Easy installation: 1 pair of 4 inch metal clamps made from stainless steel.
BrandiPower #ad
ManufactureriPower Grow Light #ad
Height4 Inches
Length8 Inches
Width4 Inches
Part NumberGLDUCT4X8C

8. Deflecto


Plastic Inline Adapter, Deflecto Duct Increaser and Reducer, 4” to 3” IRB43, White

Deflecto #ad - Simply slip the ducts over the increaser/reducer, tightening in place with clamps not included. Connects a 4 inch dryer exhaust hood to a 3 inch duct. Designed to transition between 4" and 3" diameter ducts. Ideal for bathroom fan installations. Durable polypropylene construction has a melting point of approximately 325 degrees.
BrandDeflecto #ad
ManufacturerDeflecto #ad
Height4 Inches
Length4 Inches
Weight0.1 Pounds
Width3.4 Inches
Part NumberDEFIRB43
WarrantyDeflecto Duct Plastic Increaser and Reducer, 4" to a 3", (IRB43)



Professional Grade, ALDES 4 Inch Round Spring Loaded Backdraft Damper

ALDES #ad - Highest rated Premium Airflow Control Backdraft Dampers. Maximum automatic back flow protection. W. G. Minimal pressure to open. Available in 4", 10", 6", 7", 12", 5", 8", 14" and 16".004 to 008 in. Spring-loaded butterfly aluminum damper blades encased in a 20-guage galvanized steel housing. May be installed in any position or orientation to prevent backflow and designed for use in AC, Heating, Vent and other HVAC application temperatures from -22 to 180 degrees F Fahrenheit. Extremely easy and secure inline duct insertion installation.
BrandALDES #ad
ManufacturerAmerican Aldes Ventilation Corporation #ad
Height3.75 Inches
Length1.75 Inches
Weight0.19 Pounds
Width3.75 Inches
Part Number99 023