Hon&Guan 4 inch 32 FT Long Air Ducting, Heavy-Duty Four-Layer Protection Dryer Vent Hose for Heating Cooling Ventilation and Exhaust, Silver

This worked great with my diesel heater. I love that it’s black and doesn’t stand out! It’s very easy to expand/collapse and is very portable. The only thing it would need is some kind of bag or bungee cord to keep it collapsed when not in use

Used this ducting for an in-line fan to cool my inverter on my RV. Works great. It’s just like the flexible dryer vent pipe to connect your dryer to the hard pipe in the wall but more durable as it’s double layered with the thicker black putter layer. Very happy. Only need a knife and plyers or dykes to cut the inner wire.

Used this hose to extend my portable AC unit. The black looks very good in my office and keeps the heat in pretty well.

awesome, Order a diesel heater for camping and it came with a cheap short tube. Order this one since it can flex out and collapse into a storage with no problem. Also has great insulation. great quality

I bought this for an exhaust fan for my composting toilet I built in my skoolie. I used this hose with an 80mm computer fan and it aligned up perfectly. I only needed about 8 inches of the hose and have a ton of it left for other projects. It appears to be fairly strong material and doesn't seem as though it would rip easily. The clamps that came with it are quality as well.

Bought this to replace the old tattered hoses in my engine bay. I was shocked at how good the quality is. It even has an inner thermal liner. It feels much sturdier than the cheap existing hoses in the boat. Super happy with this. --- Stuff like this is easy to disappoint when it's thin material that rips easily -- Not this stuff. AAA+++

I don’t have a lot of Windows in my apartment so I used this for my portable air conditioning unit to send the hot exhaust up my chimney. Now I can move the ac closer to my bed. Awesome

Seems to work well

Se ve y se siente de buena calidad, yo la quería para la salida del aire acondicionado portátil, no me funcionó, primero no queda en la salida, pero si cabe la salida que traeel AC, dentro de esta, y sella sin liberar aire dentro del cuarto, el problema es que este tubo emite el calor que lo contiene al exterior, entonces era como tener un radiador gigantesco en el AC, subía la temperatura en vez de bajar, imagino para otros usos que no sean refrigerar de ninguna manera debe ser bueno

Used this to build a low-cost DIY window kit for my portable air conditioner. Using a sheet of melamine with a 5-5/8" hole cut out of it. Much cheaper and just as efficient as a factory option. Very impressed! Now i can move the AC between the rooms 👌

Shipping was quick, product seems well made. Worked for my purpose. Clamps worked well.

Great for portable A/C To be able to reach the high windows that you can't reach with that mini duct hose that they give you.

It is what it says. Good quality will work well for the boat blower.