AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust

Working well with my ac infinity in line fan make sure you're getting the right size lol but definitely lightweight and durable no problems with it easy to use perfect hole size nice fit and nice color black wish stuff on Amazon was cheaper

I got this pipe to run an extra length for a laser I was using. It was really easy to install, has a good thickness to the pipe and seemed to be very durable. I did not have any leakage from the pipe or around the connectors when I was using this pipe. It comes in several different lengths and diameters. I do recommend this pipe and will buy again if I need another piece of duct.

This is a high quality air duct hose! It is thicker than just a simple plastic hose and fits perfectly in my portable AC unit. It seems like it will be very durable, but only time will tell. This is a great value for the money.

High quality, durable materials and flexible. I attached to a rolling cart with air filter. This ducting was perfect since I roll the cart to various places in the shop. I have no concerns about damage to the duct from how much I manipulate it.

I bought a whole house fan from Lowe's, the advanced kind with a grill attached to the ceiling connected to about 6 feet of flex duct, with the motor at the other end, which draws hot air out of the house and puts it in the attic where it is expelled outside via various vents. Works great in our house, but I did a variation for the one I just bought for the garage. I, being a lifelong metal man with 20 years in ductwork, used my know how to build a plenum box and stub out 3 intakes, each 12 inch round, and instead of using the grill provided with the fan, I attached flanged box to my plenum, and ran this 12 inch flex out to a box I made for each of 3 rooms. I had grills already laying around, and made the flange to fit each grill. I put volume dampers in the 2 shorter runs to balance the intake volume if necessary. The ceiling is 11' 5",, and this the reason I "zoned" the garage, shop and rec room- one intake would not adequately pull heat out of the other 2 ceilings. Now, some tips. I made my collars 11 7/8" outside, and I still fought each connection. You could make your collars 11 3/4" and you wouldn't regret it. The reason I gave 4 stars is the material will tear if it encounters a sharp edge, like the overlap, or a burr on the edge. I recommend you have some silver tape handy and tape over the overlap and file any burrs on the outside edge. Crimping the edge will cause the same problem, so I don't recommend you hand crimp or buy start collars that come pre crimped. The metal drawbands are decent, and phillips bit in a battery drill did the trick. When you go to fit the flex on your start collar turn the excess fabric back (like you were trying to turn it inside out) to get it out of the way. It wouldn't hurt to tape metal to flex before you band it, I did. I use 3M x 3" wide. I cut my first run at about 20 feet, using wire cutters instead of snips. that left enough for my second run. I have one more to do, but I fired the fan up and it worked as expected. I'm sure I'll be pleased when the ceiling is installed. I hope these tips help you gitrdun.

The material is excellent and has a higher end material feel. Installation is a breeze that exhausts or supplies much needed air with no problem.Will recommend to any serious grower that wants a high quality product that looks as well as it functions!

First and foremost, this works perfectly with my BLACK+DECKER BPP08HWTB Portable Air Conditionerhttps://www.amazon.com/gp/product/B08TH93TGG/It fit right over the exhaust connector that leads to the window, and the exhaust hookup that connects directly to the AC unit.The only CON is that I may have over-tightened the clamp (it comes with 2x clamps to create a perfect seal) that leads to the exhaust hookup to the AC unit, because there is a little bit of heat leakage at the hookup point, but I plan to seal it with some Heat Resistant Tape.It's not a perfect seal at the unit itself, but it's pretty close.The first time I had the clamp too tight and the hookup wouldn't line up and seal at all, but after sliding the tube back a few CM, and loosening the clamp a bit, I was able to get it pretty close.Anyhow, for about $25 bucks, I HIGHLY RECOMMEND THIS TUBE!Now I can have my AC Exhaust in the bedroom window, and blow cold air in my living room!If I could find a use for another, I'd purchase again.Hopefully it is as durable as it seems, because if so, I won't need a backup.Will update with pics later, just wanted to rate this item after hooking it up, it was that good!### Update ###Nearly 4 months into ownership, and it is still holding up, and in nearly the same condition as when first purchased!A friend accidentally stepped on it while traversing my domicile, and despite the hose being slightly bent (the slinky-like wire corkscrewing that runs the length of the hose allowing it to retain its shape), it was intact, no puncture or tearing!I'm amazed, as I was all but sure it would be destroyed, or at the very least need a patch kit.