Hon&Guan 3" x 8FT Insulated Duct with Aluminum Foil, Flexible Dryer Vent Hose for HVAC Ventilation and Duct Fan Systems, 2 Clamps Include

I read a couple reviews before I bought this talking about how difficult it was to actually put over a vent, but I bought it anyways. After struggling with the same issue for a minute, I figured out that you need to peel some of the black plastic away from the inner foil, just like 2 inches from the end. Once you do, it's 10 times easier to attached the end and it works perfectly for our dryer vent. Also, the black plastic makes the entire length way stronger than the standard just foil ones that you buy in the store.

Very flexible and can be stored in a small space. Not much insulation but seems air-tight and can be wrapped. Worked great for pushing cold air into a roof top tent. Will work for hot or cold.

xTool has a 3 inch hose, so if you buy another 3 inch hose, you would expect them to be at least the same size and work with the same couplers. But when you try to use this hose with an xTool coupler, it’s several millimeters smaller in diameter, so it definitely won’t form anything close to a seal.The hose itself is fine and feels pretty durable. It is a thick plastic, but not rigid like the xTool plastic where you can actually turn the hose in a particular direction and it will support itself. I did find that the difference in diameter between the xTool hose and this hose is sufficient enough that you can wind this hose inside of the xTool. So if you can find a coupler that works with this hose and an xTool port, this might be a good solution.UPDATE: I added two more pictures. Because it slides inside the other tube, I cut the xTool tubing to make two ends that go into the coupler and still have enough of the rigid xTool tube to provide some control and structure. I think this will work if you just use this tube to extend your existing tube in the middle. In the pictures you can see that I removed a middle section of the xTool tubing and replaced it with this. For additional structure, you could add more elbows of the xTool tube at strategic locations around this tubing.

Fit like a glove, seems to be good quality. I will update this once I actually test it out.

Powerfull and very reliasble

Was a struggle to get on the existing exterior pipe, but I made it fit. It’s a snug fit, but it works. Very flexible, seems to be lighter and weight, and the length was perfect.

I was replacing an 8 year old dryer vent with a new one from a big box store. That new one was so flimsy it ripped easily and was nothing like the old one I had but was 3 times as much. Found this one online and I’m glad I did because it is made well. I recommend this to anyone replacing dryer vents.

One annoyance is that it does not flare out at the ends slightly to accommodate the 4 inch ducts. I had to crimp the pipes coming in (fortunately I had the right tool for that) and still sealed the edges with duct tape after clamping it on.It is very long. Use duct tape to squeeze some of the excess together and bind it from the outside. This will minimize the space dust and lint has to accumulate within the passage. Leave enough slack to pull it all the way out and turn it 90 degrees for servicing.The insulation, construction, and black color to blend out visually are very well done. The black duct tape on the black duct appears to be the same sheen, so it's basically invisible.I got this ahead of a CostCo installation (they provide a lot of this for free) but the installer liked it better than what they brought in large part because the one they kit in is too short to run up the whole wall for a basement install. If your duct is right at floor level like in most homes where the laundry is not in the basement, this is just a waste of slack. You are better off with a short one.Overall, very glad I got this.