Top 10 Duct Fan Adapter – HVAC Ducting

As an Amazon Associate I earn from qualifying purchases.

1. AC Infinity

#ad

6” to 4” Ducting Reducer Increaser Cone for Grow Tent Bathroom Kitchen Ventilation Systems, AC Infinity Duct Adapter

#adAC Infinity #ad - Raised lips on the smaller opening for extra grip on ducting or your equipment's duct opening. Maintains airflow efficiency by creating a connection between two different sized duct openings. Adapts 6 inches to 4 inches | Product Length: 5 inches | Finish: Zinc Coating. Galvanized steel body that is corrosion-resistant and can withstand high temperatures. A ducting cone designed for adapting ductwork to equipment like bathroom fans and dust collectors.

Brand	AC Infinity #ad
Manufacturer	AC Infinity #ad

2. Hon&Guan

#ad

6'' to 4'' Ducting Reducer Increaser Connector for Ventilation Systems 150 to 100, Hon&Guan Duct Adapter

#adHon&Guan #ad - 150mm female to 100mm Male Round Ducting Adaptor. Perfectly suited for ducting your tumble Dryer, Hydroponics, In-Line Extract Fans, Bathroom or Kitchen extractor fan, or Cooker Hood. On the other side there is a 100mm Male Spigot - Will fit into 100mm straight ducting. On one side there is a 150mm Female Spigot - Will fit over male fittings. Pp-plastic rigid ducting is perfect for DIY and Trade use.

Brand	Hon&Guan #ad
Manufacturer	Hon&Guan #ad
Height	4 Inches
Length	6 Inches
Weight	5.6 ounces
Width	6 Inches
Part Number	REDUCER-150-US

3. Deflecto

#ad

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

#adDeflecto #ad - Simply slip the ducts over the increaser/reducer, tightening in place with clamps not included. Durable polypropylene construction has a melting point of approximately 325 degrees. Ideal for bathroom fan installations. Connects a 4 inch dryer exhaust hood to a 3 inch duct. Designed to transition between 4" and 3" diameter ducts.

Brand	Deflecto #ad
Manufacturer	Deflecto #ad
Height	4 Inches
Length	4 Inches
Weight	0.1 Pounds
Width	3.4 Inches
Part Number	DEFIRB43
Model	IRB43
Warranty	Deflecto Duct Plastic Increaser and Reducer, 4" to a 3", (IRB43)

4. Vent Systems

#ad

Duct Hose Dryer Vent T Connector, Vent Systems 4'' Inch Duct Connector 3 Way Hose Adapter/Splitter for Hose T-Shape Round Pipe Connector- Extractor Fan, 4 Inch 3 Way Fitting

#adVent Systems #ad - Finally, install the clamp and tighten the screw. It is suitable for hoses of 100 mm 4 inch. Wipe the tee when using it, then dock it with the hose and fix it with aluminum foil tape.

With the dryer vent hose it can be connected to exhaust fans, dryer vent covers and vent seals. The duct connector is a three-hole - 3 way connector with two branches. Made out of high quallity Metal it is a material with high strength, good toughness. The interior of the duct splitter is smooth, and its reasonable curvature greatly reduces the wind resistance. At the same time, it can discharge air from each part in the ventilation project. It is small in size, so it doesn't take up space. The dryer duct connector is seamlessly connected to achieve a good leakproof effect. Don't worry about leaking air after installation.

Brand	Vent Systems #ad
Manufacturer	Vent Systems #ad

5. Vent Systems

#ad

Vent Systems 4'' Inch Duct Connector 3 Way Hose Adapter/Splitter for Hose T-Shape Round Pipe Connector- Extractor Fan, 4 Inch 3 Way Fitting, Duct Hose Dryer Vent T Connector

#adVent Systems #ad - The dryer duct connector is seamlessly connected to achieve a good leakproof effect. Made out of high quallity Metal it is a material with high strength, good toughness.

It is suitable for hoses of 100 mm 4 inch. It is small in size, so it doesn't take up space. Don't worry about leaking air after installation. Finally, install the clamp and tighten the screw. The duct connector is a three-hole - 3 way connector with two branches. At the same time, it can discharge air from each part in the ventilation project. With the dryer vent hose it can be connected to exhaust fans, dryer vent covers and vent seals. Wipe the tee when using it, then dock it with the hose and fix it with aluminum foil tape. The interior of the duct splitter is smooth, and its reasonable curvature greatly reduces the wind resistance.

Brand	Vent Systems #ad
Manufacturer	Vent Systems #ad

6. Vent Systems

#ad

4 Inch 3 Way Fitting, Duct Hose Dryer Vent T Connector, Vent Systems 4'' Inch 45 Degree Duct Connector 3 Way Hose Adapter/Splitter for Hose T-Shape Round Pipe Connector- Extractor Fan

#adVent Systems #ad - It can be used outdoors and indoors, even if it is exposed to the sun and rain. Wipe the tee when using it, then dock it with the hose and fix it with aluminum foil tape.

It is suitable for hoses of 100 mm 4 inch. The interior of the duct splitter is smooth, and its reasonable curvature greatly reduces the wind resistance. The dryer duct connector is seamlessly connected to achieve a good leakproof effect. At the same time, it can discharge air from each part in the ventilation project. It is small in size, so it doesn't take up space. Don't worry about leaking air after installation. Finally, install the clamp and tighten the screw. The duct connector is a three-hole - 3 way connector with two branches. With the dryer vent hose it can be connected to exhaust fans, dryer vent covers and vent seals.

Brand	Vent Systems #ad
Manufacturer	Vent Systems #ad

7. coolerguys

#ad

Coolerguys Thermal Plastic Duct with End Caps for Electronics and Crypto Mining 92/120mm Fan/4" 10-30"

#adcoolerguys #ad - Hassle-free: tubing that could be effortlessly removed, readjusted or reinserted to any desired position by snapping the tubing together. Versatile: can be bent and twisted around areas that are hard to reach or with complex design. Heat-resistant: can handle temperatures of up to -30 to 80 degrees Celsius.

Brand	coolerguys #ad
Manufacturer	Coolerguys #ad
Height	4 Inches
Length	6 Inches
Width	4 Inches
Part Number	840556093480

8. coolerguys

#ad

Enclosures, Coolerguys 120mm or 92mm Fan to 4" Ducting Shroud Funnel with Clamp for Greenhouses, Crypto Mining, and More

#adcoolerguys #ad - Securely fastened: Easily secure the ducting to the shroud with the included stainless steel clamp. Universal usage: will fit any 120mm or 92mm fan with standard 4" ducting. Engineered efficiency: the shroud is engineered to slightly and gradually reduce the size from the fan side to the duct side to minimize airflow blockage. Trust in products: we stand by our branded products and back them with a 3 year manufacturer warranty.

Brand	coolerguys #ad
Manufacturer	Coolerguys #ad

9. CABAX

#ad

CABAX Duct Reducer 6 to 4 inch Air Duct Adapter HAVC Pipe Connector for Inline Ventilation System 150mm to 100mm, White

#adCABAX #ad - Perfectly suited for bathroom, office, kitchens, home, apartment, hotel HVAC system. Ideal to connect 6 inch 150mm to 4 inch 100mm duct system. Useful tool: can be used to connect two different size duct to creating a seamless ventilation system pipe. Durable pp-plastic material resists moisture to remain corrosion-free. Easy installation, using duct tape or duct clamps to connect air duct adapter.

Brand	CABAX #ad
Manufacturer	CABAX #ad

10. POWERTEC

#ad

POWERTEC 70145 4-Inch to 3-Inch Reducer

#adPOWERTEC #ad - 3-inch nominal end measures 2-63/64-inch O. D. And 3-45/56-inch I. D. Connect 3-inch opening duct to 4-Inch flexible hose. Tough, durable ABS plastic material. 4-inch nominal end measures 3-15/16-inch O. D. And 2-23/32-inch I. D. Transition 3-inch duct to 4-Inch standard hose.

Brand	POWERTEC #ad
Manufacturer	Southern Technology LLC #ad
Height	3.5 Inches
Length	4 Inches
Weight	0.02 Pounds
Width	4 Inches
Part Number	70145
Model	70145