AC Infinity Flexible 4-Inch Aluminum Ducting

The four layer build is the real difference here compared to thinner single layer ducting. The inner aluminum foil layer is fire resistant, and the outer thermoplastic layer adds real resistance to tearing and punctures while routing it through tight spaces. The internal steel wire spiral keeps the tube round and open even after bending it around obstacles, rather than collapsing or kinking the way cheap ducting tends to. It stretched to full length without issue and the diameter fit snugly over a standard inline fan connection, no fighting to get it seated. The two included clamps are good quality and cinch down tight for a proper seal. Works well whether the application is a grow tent, dryer vent, or general exhaust routing.

Unmatched Build Quality ​The standout feature of this ducting is its Heavy-Duty Four-Layer Protection. Unlike standard single-layer foil ducts that rip or crush the moment you try to maneuver them, this AC Infinity ducting feels remarkably robust and premium. ​Tear-Resistant: The thick, reinforced outer layer provides incredible durability, giving you confidence as you snake it through tight spaces or attics. ​Sleek Aesthetic: The matte black exterior not only looks much more professional than standard shiny foil, but it also helps block light—an essential feature if you are using this for an indoor grow tent exhaust system. ​Structural Integrity: The internal wire helix keeps its cylindrical shape beautifully, preventing sharp kinks or sags that could restrict your system's airflow. ​Effortless Installation ​Routing ventilation systems can often be a frustrating, tedious chore, but this product's design makes the process incredibly straightforward. ​Perfect Sizing: The 6-inch diameter is true to size, sliding snugly and securely over standard inline fans, carbon filters, and exhaust ports without a struggle. ​Generous Length: At 8 feet long, it offers plenty of flexibility and reach to route around obstacles without forcing you to buy and tape together multiple smaller pieces. ​Hardware Included: It is incredibly convenient that the package includes two high-quality stainless steel hose clamps. They tighten smoothly and provide a secure, airtight grip right out of the box. ​Versatile Performance ​Whether you are using it for heating, cooling, general ventilation, or dryer exhaust, this ducting performs flawlessly. It handles high-velocity airflow efficiently without the excessive rattling or whistling noises common with cheaper alternatives. ​Final Verdict: AC Infinity consistently delivers top-tier ventilation gear, and this ducting lives up to that high standard. With an impressive 4.6-star rating from over 19,000 reviews, it is clear that this is a tried-and-true staple for builders and homeowners alike. It is absolutely worth the investment for the peace of mind, durability, and ease of installation it provides. Highly recommended!

The AC Infinity Flexible 8-Inch Aluminum Ducting (8 feet long) is a fantastic choice for anyone setting up or upgrading a ventilation system. I use mine with an AC Infinity inline fan, and the results have been excellent—it moves air efficiently while staying strong and secure. The four-layer protection (dual aluminum foil, PET, and steel wire spiral) makes this ducting not only flexible but also very durable. It doesn’t tear or kink easily like cheaper ducting, and the extra thickness helps keep it from collapsing under pressure. The flexibility makes it easy to route through tight corners, and installation was straightforward with the included clamps. ✅ Pros: Heavy-duty four-layer construction for long-lasting use Flexible design makes installation easy, even in tight spaces Works perfectly with inline fans, grow tents, hydroponics, and HVAC setups 8-foot length is versatile for most setups Comes with sturdy clamps for secure attachment ❌ Cons: A little stiffer than thinner ducting, but that’s the tradeoff for durability At 8 feet, you may need extensions for larger setups 💡 Tips: Use with an AC Infinity inline fan for maximum airflow efficiency. When cutting to size, make sure to trim cleanly and secure ends tightly with clamps to avoid air leaks. If using in a miner room or greenhouse, pair it with a soffit vent to direct air outside effectively. Avoid bending too sharply—keep smooth curves for better airflow. Bottom Line: This ducting is built to last and does its job extremely well. Whether you’re cooling a miner setup, venting a grow tent, or upgrading your HVAC system, the durability and flexibility make it worth the investment.

quality of materal is good but watch the length. I got one a few months ago to exaust a fan outsid and during a rain storm a cat tried to get in through it and it fell from the ceiling it was mounted on and the cat freaked out and riped it up. So I got a new one ( ducting not cat ) and want to install it and its 1.5ft shorter. Kinda odd being I just went to my history and hit Buy Again. I had to remount the fan closer to the exit spot. other then cat proof and length issues its a good product.

Top quality tubing. Works great for the grow tent. I also have the same tubing for out portable air conditioner. It stays cooler in our bedroom since changing out the cheap plastic tubing that came with the AC unit.

These ducts are really high quality. They are the size theu claim to be. They are light weight. They expand to the proper size easily, and almost "click" back to smaller lengths instead of becoming a mess. They do have a little thing of tape on each end, that is kind of hard to get off, not that hard, but ya might groan a few times. With the included clamps they form great seals and are easy too attach. They take a beating too... worth the extra few bucks in my mind. I have horror stories about lesser flexible ducts.

Metal dryer vent from Lowe's was very flimsy and tore easily causing dryer to not dry well. I came on Amazon to find a replacement and there are tons of Chinese items. I ended up checking out virtually all of the options and landed on one that also had a coating on the outside to make it stronger. I can say that the plastic coating does exactly that: it helps control the hose while installing, has a good feel, and is sealed properly around the vent. My item came properly sized and it fit around both hose hookups. You'll notice reviews saying some of the hoses out there are too small which renders it unusable. Also I recommend getting clamps like the one below or something similar which makes installing the hose WAY easier and the cost of the clamp is less as well. -POWERTEC 70120 4 Inch Key Hose Clamp

This AC Infinity 6-inch aluminum ducting is excellent quality! The four layer construction feels very sturdy and heavy-duty, yet it’s flexible enough to easily route through tight spaces. Installation was straightforward, and it works perfectly for both ventilation and exhaust applications. It’s long enough at 8 feet to handle most setups, and it holds up well without kinking or collapsing. Highly recommend for anyone looking for durable and reliable ducting for HVAC, grow rooms, or other airflow needs.

Acostumbrado a comprar anteriormente muchos de lps productos Ac Infinity me ha sorprendido la austera presentación del conducto..los anteriores siempre fueron presentados en la linea de ac infinity, caja impresa con el producto y otro detalles muy cuidados como este fabricante nos tiene acostumbrados...adjunto dos imagenes para demostrar lo anteriormente descrito..en una veras dos cajas que incluian el mismo conducto de 6" recibido hoy en el empaque que muestro en ña segunda fotografia...esto me puede hacer dudar esta vez de la autencidad del producto.

Il prodotto è arrivato puntuale ma è solamente 70 cm circa e non 2.4 metri, e con un solo morsetto

De muy buena calidad y las especificaciones correctas.

منتج ممتاز

Excelente calidad