6 Inch Duct Easy-to-Install 8-Feet Air Duct with 2 Clamps–4 Layer PVC and Aluminum Flexible Duct for HVAC Ventilation

Used this for the intake on my Chinese diesel heater. Be warned that 3" is "just a little" too big for the metric sized fitting on these heaters. But a few wraps of duct tape on the male side had these fitting just fine. (wow....I think this is the first time in my life that I actually used duct tape for....well....DUCT WORK LOL)

Ok, first though not technically a feature, the packaging was so well designed, that this vent hose was not creased, dented or out of alignment on delivery. The hose is built like a slinky, which helps, but it was in a tight fitting, tall box and then in a plastic sleeve, with the hose clamps slipped over the hose but protected from being torn by them. Nice packing job!#1 The Best A+ No. 1 feature---the ends of the hose are reinforced with thick rings that make installation on the dryer pipe (which is sort of short and jagged) and onto whatever connection you have venting to the outside, incredibly easy. If you can see it in the picture, the reinforced part of the coating is thick enough you can fit the clamp ring over it and still have extra room. The extra thickness gives you room to fit it over the dryer pipe and then get the clamp over all of it, ensuring that the hose won't slip off as you put the dryer back in position. And it doesn’t look like it will start to lose its integrity when it comes time to remove the hose for cleaning. I anticipate the ends of the hose holding up.The reinforced bits are something that should be on every vent hose.Yes, most foil vent hoses have some bit of thickening or little ring at the end, but it’s not as substantial and it’s usually short and the foil tears away from it quite easily. This is a much better design.#2 The Accordion style pleats allow the rings of this hose to compress back on themselves, like a Slinky, so even at six feet you don't have to shorten the hose. Cutting hoses often messes up the structure and then the alignment of the hose goes off, and each time you have to detach or reattach the hose it gets harder to manage.#3 The substantial plastic coating on this hose really protects the internal foil part, so that it doesn't get torn when installing or moving it around when you move the dryer to clean.#4 Substantial clamp rings, packaged (again with the packaging!) so that they were not squashed or bent in transit and they didn’t tear the hose.I have learned from my past dryer vent hose mistakes. No more rigid metal hoses that get squashed and if you have to size them down, create structural problems and razor sharp edges. No more paper thin foil or plastic hoses that are easily torn and don't have the larger, reinforced ends.I have no complaints. This is a fantastic dryer hose, and I was motivated to get online and write a review right after installing it, because I hate working on the dryer and this was so easy it wasn't even workIf the manufacturer wanted to make the product even better they might substitute the clamp rings for the type with the little turn- key built in (I took one off another unit) then you wouldn't even need the one tool (the screwdriver) that's required to tighten the clamp rings. And maybe they could offer white or grey as color options. But that’s just picking nits.Great product!

I bought a 3"x5' and when I tried to install it onto my 3" pvc pipe, it was too big. Then i checked it on my schedule 40 3" ID with a 3.5" OD and it was still slightly bigger.Did I get a 4" hose by mistake?

Very flexible I like that they have different sizes that you can buy to make sure you have the best fit holding up well easy to install

Works like a charm, flexible hose lengths works wonders

It works amazing!! No more issues!Easy to do on my own

I'm giving this Drasum 6 Inch Duct Easy-to-Install 8-Feet Air Duct with 2 Clamps–4 Layer PVC only 1 star partially because they unforgivably advertise with fake, misleading images and descriptions. The images and supporting descriptions lead me to believe this 6-inch flexible duct featured a smooth and far-stronger pleated black PVC outer layer than it truly does. In actuality, the black PVC outer layer is wrinkly and paper-thin. It is so unrigid and flimsy that the duct droops and hangs like a stretched slinky under its own weight. This flexible duct is FAR from semi-rigid. I bought the 8ft version with the intention of using it for venting my range hood. When you hold one end of this flimsy duct above your head, all it takes is gravity to immediately expand it to 6 feet long. And I suspect that if you tried to stretch it by an additional 2 feet (good luck if you need the full advertised 8 ft length!) you'd really be pushing it. AND I now also realize this duct's technical specs (e.g., temp ratings) are equally poor. I'm immediately returning this UNUSED Drasum 6 Inch Duct! Sure, $13.99 with two clamps included sure was an enticing price, but you're getting what you pay for - and not even that in my book!NOTE: I have now instead purchased the Lambro 6" X 8ft semi-rigid duct (model L306) and there's no comparison! The Lambro is flexible but truly semi-rigid and it's rated and tested to far superior specifications that reflect the huge difference in strength. The Lambro is rated for -86F to +482F while tested to 662F degrees! The max air velocity and max work pressure specs are equally impressive. When you look down through these two ducts for comparison, the inner wall of the Lambro is so much smoother than the inner wall of the Drasum duct. It's obvious that forced air can pass through the Lambro duct far more aerodynamically (rated at 5,000fpm/tested to 12,500fpm!) than through the flimsy, wrinkly-walled Drasum duct! The Lambro feels VERY much stronger and durable, needs to be gently pulled to expand it to the length you want (and no more!), it's flexible, doesn't droop or hang like a slinky, and can hold a shape when you intentionally bend it. The Lambro only cost an additional 6 bucks, but for me, it was a "NO BRAINER"!

Very practical