Noctua NA-FD1, Fan Duct Kit for NH-L9i and NH-L9a Series CPU Coolers (Black)

A lot of extra tubes come with this, so my first thought is that I can use it for two computers, but it only comes with 4 of the thumb screw things that you push the pipes down over, so once you've installed one, the lack of more thumb screw things means all the extra foam and pipe you still have are useless. I bet Noctua would send me more if I asked. Also, the screws you get are not compatible with the 25mm NFA9x25 fan that the nhl9i cooler itself is ready for, even including screws with it for that. To clarify, the nhl9i comes with longer screws that you can utilize if you want to swap the NFA9x15 fan that comes with it for a better NFA9x25, provided you have the clearance for it and have purchased said fan separately. These screws however, just like the ones that come on the preinstalled NFA9x15, are not the thumb screw type and won't work for a way to hold the pipes in this duct kit. The duct kit comes with 4 screws, one for each corner. You are to replace the preinstalled screws on the NFA9x15 with these. Once screws are installed, they protrude above the frame of the fan slightly, and the pipes in this kit slide down over those and friction holds them there. So what I have been trying to say is the longer version of the thumb screws for NFA9x25 are not included in this kit, so you'd probably have to ask Noctua for those. Now, once the pipes are installed, you shove the foam pieces down over the pipes, with the pipes coming up through the matching holes on each foam piece. Make sure the thickest piece is the one that ends up on top. From what I can figure, they normally recommend you stick a tooth pick through the grill over the fan and touch one corner of the fan and then mark the toothpick for the height, and then use that to determine the height your foam pieces must achieve. However, Inwin Chopin Max case has holes too small for that, so I put the thickest piece on the fan and just piled the biggest pieces remaining on top of that and carefully laid the side panel in place until I could feel that I had to press down slightly to make it touch against the case the way it will have to be when properly installed. Then, I sat the stack of foam I ended up with to one side and I pressed 4 straws down, one on each thumb screw. Now take the thinnest of the foam pieces I ended up setting aside earlier and press it down on the pipes all the way down till it's against the fan. Now take the next thinnest piece and depress it until it lays against the first piece. Rense and repeat until all pieces are installed. Now, in theory, you can just press down on the top piece and cut the pipe with scissors. I didn't like the chance of cutting the foam though, so I removed the top piece and cut the tube off protruding just a bit, maybe a little more than a quarter of an inch, above the next foam piece that was still installed. My scissors cut the pipes easily. Once cut, I put the top, thickest, foam piece back on. Always make sure the thickest foam piece that is in the kit is on top. The reason for this is added durability plus it lets you cut the pipes a fair bit short but the foam piece will still be held in place. This is so that you can know the hard plastic pipes won't be pressing against the side panel once the soft foam has compressed a little. Now to geek out with this. As it turns out, I built two Chopin Max computers at the same time. Intel 12400, Noctua NHL9i-17xx, AsRock b660m-ITX AC, 32gb Teamgroup G-Force Vulcan, 1tb wd blue sn580. I bought duct kits for both but chose to install only one first. After completing the builds, I did burn-in tests on both machines. AT first, I was kind of disappointed to find the temp hovering at 154f on both computers while running the CPUZ stress test, exactly the same temp, 154.8f. But then I happened to notice the fan on the ducted one was running at 2270rpm, and the one on the unducted system was running at its max 2550rpm. Once I used Fan Ctrl to force the fans to both run at 80 percent capacity, the unducted system proceeded to gradually warm up until it was at about 170f, where the ducted one stayed right around 158f. To be sure, I ran the same test again once the duct kit was installed on the second system, both now ducted, and they were within a degree of each other's temp.

Easy to install and it actually did lower my temperatures in my SFF case quite a bit. I didn’t take actual measurements but my estimate is probably between 3-5°C cooler.

Got this bundled with the Noctua cooler I bought for $2 more, so figured it was worth a shot even if it didn't work. After installing them to bridge the 25mm gap between the fan and case, it dropped my CPU temps 5-10 degrees on average running the same benchmark before and after.

I have this installed in my Sliger CL530 mini-ITX case to prevent the exhaust from my power supply from recirculating inside the case. I had to use a few small pieces of double-sided tape to get it to stay put, but other than that it works like a champ and helps to keep the temps under control in my cramped little case.

Reduced the temps of my system by a couple degrees, pretty worth it for a pretty simple mod. I would say slightly overpriced for what it is, but no real complaints here.

This is an innovative product, but unfortunately it is specialized to the particular coolers (Noctua NH-L9a/i) listed in the product title. Judging by the pictures and common fan sizes, I assumed this product would fit 120mm fans. It does not—it's for 90mm fans only. Furthermore, it uses a nonstandard fan screw size and length, making it not mountable to other fans without special hardware. I looked high and low for a similar product for 120mm fans and couldn't find anything, unfortunately. I need to duct a 120mm standard CPU fan to the side of an SFF chassis for improved cooling, but unfortunately, I will be returning this product as unusable for that purpose. Noctua, new product opportunity? In the meantime, I will probably end up fashioning a duct myself using duct tape.

I was debating whether this would actually make a difference, but after installing and testing it, I was honestly surprised. I have the R5 7600X, and before, my CPU was averaging around 70°C during gaming and CPU-intensive tasks. After installing this, the average temperature dropped by 4–5°C. It’s not a massive difference, but for what it is, that’s pretty good in my opinion. If you have the space, I’d definitely recommend going with a bigger cooler if you’re aiming for significantly lower temperatures. Installation was pretty straightforward. I recommend laying your case on its side and stacking a couple of the ducts on top of the cooler. Then, close the lid to check if it fits, removing or adding ducts as needed.

Excellent for sfx cases paired with the noctua low profile cooler. Easy to install.

very nice, I like!

Noctua Spettacularis la terza foto non ha bisogno di commenti…punteggio più basso senza Noctua FOAM, punteggio più alto con Noctua FOAM

muy contento con el articulo, aisla bien el ventilador del procesador (tengo una funda zotac zbox 3060 mini)

Works great to squeeze some extra performance out for the cooler when installed in slim and small cases. Used in a Fractal Node 202 and noticed an immediate performance upgrade. Fans can run slower and quieter and still deliver acceptable temperatures.

Awesome duct for the Noctua NH-L9a in Dan Case A4, amazing fit.