Hon&Guan 4'' Insulated Flexible Duct 8 FT Long, Black Noise Reducer Hose Silencer for Inline Duct Fan of Air Conditioner HVAC Ventilation System.
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Availability:
In Stock.
Arrives
Wednesday, May 6
Size: 4" X 8 FT
Color: Black
Features
- Noise Reducer&Absorption:The internal structure of glass wool is fluffy and the overall density is large, noise can be reduced by allowing some of the sound waves to escape through the holes rather than reflecting, can decrease the noise by up to 50%
- Thermal Insulation:This Flex Duct is intended to be used in heat preservation, cooling, ventilation, with a good thermal insulation performance, works well with your portable ac device, temperature endurance range from -22F ~ 302 F (-30C ~ 150C)
- Four Layer Protection:Heavy-duty four layer protection design, 1 * PVC+2 * aluminum foil+1 * centrally glass wool with 2 clamps, and the outermost layer of this insulated flexible duct can prevents cute pets from biting and breaking
- Anti-Corrosion & Durable:Thick layer of PVC&2 layers of Aluminum on this flexible ducting prevents gas leaks effectively. Works with extractor and exhaust inline duct fans, carbon filters, also be used as a boat blower hose
- Variety of Applications:Hon&Guan insulated flexible duct is suitable for HVAC system. It will move and deliver air in Kitchens (cooking exhaust), Green Houses and Grow Rooms (Air Circulation, Intake, Exhaust and Light Fixture Cooling), Bathrooms (Smell and Moisture Exhaust), Dryer Rooms, Grow Tents and other applications etc
Brand: Hon&Guan
Material: PVC
Color: Black
Product Dimensions: 4"W
Maximum Pressure: 2500 Pascal
Nominal Wall Thickness: 27 millimeters
Outside Diameter: 4 Inches
Item Length: 8 Feet
Manufacturer: Hon&Guan
Item Dimensions L x W: 4"W
Nominal Wall Thickness: 27 millimeters
Outside Diameter: 4 Inches
Item Length: 8 Feet
Material Type: PVC
Color: Black
Maximum Pressure: 2500 Pascal
Brand Name: Hon&Guan
Manufacturer: Hon&Guan
Item Type Name: Insulated Flexible Duct
Included Components: 2PCS Clamps
Unit Count: 1.0 Count
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, May 6
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 6" X 8 FT
Color: Gray
Purchased for a portable AC exhaust hose replacement. Works GREAT! Gets barely warm to the touch, when the old exhaust hose was extremely hot and radiating heat back into the room. AC is a little quieter too. Can't recommend this insulated duct highly enough, I can't believe I had been undermining my AC's efficiency for years with a non-insulated exhaust duct. The duct itself feels very well-made, each end has a short length of reinforced foil which fits under the included hose clamps perfectly. Insulated outer duct begins a few inches later, and the outer duct material feels very durable and flexible. The inner duct acts as the support and the outer duct holds the insulation in place, and the result is a dramatic drop in outer duct temp. AC has been running for a few hours now the outer duct is no hotter. I think we have a winner.
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Reviewed in the United States on July 14, 2024 by Morgan C.
Size: 6" X 8 FT
Color: Gray
The stock hoses for my portable (two-hose!) air conditioner had disintegrated, and I've long been considering buying a set of insulated hoses for it ever since I bought the unit. I'm honestly surprised that they were not insulated at all out of the box. As such, I bought two of these hoses in 6"x8'. Installing them onto the original hose adapters was a bit of a task, entailing very liberal application of duct tape. This done, I connected them up and powered the unit up. I did not buy these hoses with the intent of being quiet, but I was honestly and pleasantly surprised by how much quieter the condenser side fan was now. I can barely hear it anymore, and it quickly subsides under the sound of the compressor once pressure builds. With the original hoses, it was easily the loudest part of the entire air conditioner. I cannot measure the thermal performance directly versus the original hoses, due to the original hoses having disintegrated years ago as of me writing this review. However, I can definitely say that, before, it was actually hot behind the unit. With these, it's significantly cooler, and the unit's performance has significantly improved. It can now actually cool my garage! Something it used to struggle with. The hoses have also survived from a durability standpoint significantly better than the original plastic hoses. Although they ARE a little less convenient to store when the air conditioner's not in use thanks to their bulk. That's the only "negative", other than the admittedly improvised installation, that I can even say about them. Final Answer: If you have a portable air conditioner and use it with any regularity, upgrade it to insulated hose(s) now. You will not regret it.
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Reviewed in the United States on September 18, 2021 by Josh
Size: 4" X 4 FT
Color: Gray
Good quality, working perfectly for bathroom exhaust duct
Reviewed in the United States on February 20, 2026 by Tex
Size: 4" X 8 FT
Color: Black
Pros: Overall quality and ease of installation. Insulation is thick. Cons: The inner foil is thin, which made connecting it with the hose clamps a challenge without tearing it. This would hands down be a 5-start if the inner foil were thicker.
Reviewed in the United States on November 26, 2025 by T. Porter
Size: 4" X 8 FT
Color: Black
I wanted to muffle the sound from an inline fan used for a bathroom - I chose the 8' version to maximize the sound deadening effect even though I only needed a short distance, and it worked perfectly: whisper quiet
Reviewed in the United States on January 31, 2026 by Kevin Mead
Size: 4" X 4 FT
Color: Gray
We replaced a bathroom ventilation fan located on the ground-floor of a 2-story home. The previous home-owner had installed an un-insulated, plastic, flexible duct to connect the ceiling-mounted vent fan to the exterior wall-exhaust and not only was it incredibly noisy but also inefficient - so much that you could hear the reverberation of the fan in the room directly above the bathroom. After removing the previous duct-run, we measured that approximately 2.5-3 feet of duct was needed to span between the fan exhaust and the exterior wall and this specific duct was perfect as its 4 foot length. The extra length allowed us some slack so that we could maneuver and install it without giving us a headache - since we had to work strictly through the existing hole in the ceiling where the exhaust fan was located our space was very limited. It can be incredibly difficult to source such a short-run of insulated duct for a fair price. This specific insulated duct was a very good value and of good quality. In addition to installing this insulated duct we also re-positioned some of the ceiling insulation since this replacement duct had more 'bulk' than the previous un-insulated plastic duct. If I run into another situation as above I would not hesitate to purchase this insulated duct again.
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Reviewed in the United States on March 6, 2023 by CheeseMouse
The Hon&Guan 4 Inch Dryer Vent Hose, boasting a flexible aluminum construction and spanning 8 feet in length, delivers reliable performance for dryer ventilation needs, earning a perfect 5-star rating. Equipped with 2 clamps for secure installation, this versatile hose proves to be an essential component for efficient airflow management. Crafted from durable aluminum, this dryer vent hose fulfills its purpose with precision, facilitating optimal airflow within dryer systems. Its flexibility allows for easy maneuverability and installation, accommodating various configurations and ensuring seamless integration into existing setups. Spanning 8 feet in length, the Hon&Guan dryer hose provides ample coverage, reducing the need for additional connectors or extensions. This generous length enhances convenience and versatility, making it suitable for both residential and commercial applications. The inclusion of 2 clamps further enhances the reliability of the hose, ensuring a secure and tight fit during installation. With these clamps in place, users can trust that their dryer ventilation system operates efficiently without the risk of leaks or disruptions.
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Reviewed in the United States on February 5, 2024 by Love Reviews
Size: 4" X 4 FT
Color: Black
The outside layer of black plastic is very fragile like tissue paper. I installed this duct 3 days ago and it already has large tears.
Reviewed in the United States on February 7, 2026 by Christopher R.