Just out of the box, this looks like quite a nice fan. _In_ the box, it looks even nicer - enough so that I found myself wondering how much less I would've paid for just the fan with bare leads. Still, if I'm going to be paying $17 for a fan, the nice packing job, slickly printed manual and black enamel hardware (2x custom-branded finger grills, 4x 55mm M4 screws, 4x thick rubber washers, and... err... 5x nuts. oops. guess there's a spare) do help a little to make it feel like I'm getting my money's worth.The fan itself is much sturdier/heavier than I expected - having apparently missed the bit where it was described as having a cast aluminum frame, I assumed it was the same black plastic as most DC muffin fans. It's not. The frame on this thing is built like a tank, and, while the hub & blades are still the usual PBT plastic, I suspect the short stubby shape will also be less damage-prone. Not that I regularly damage fans by jamming screwdrivers, fingers, or whatever other device and/or appendage might be convenient into the spinning blades - that would be silly. And reckless. And might explain why my fingers are always sore.I'd initially wondered about the effect those short blades with the large hub, and, as expected, it causes a pronounced ring or tube-shaped airflow, with a not entirely dead, but much calmer area in the center. I can imagine some specific cases where this might be less than ideal, but I expect it will make little difference for enclosure cooling (except in my case, where the heatsink placement means it's solidly an advantage).It's not a silent fan by any stretch of the imagination (not surprising, for a ball bearing fan at 3000+rpm), but it's not loud or intrusive. If I set it on my desk, I can hear it from the other end of a silent room, but you won't find yourself yelling over it - I've had PCs that ran much louder. Those vibration dampening rubber washers in the hardware packet will also do a lot to keep it from resonating your enclosure into a loudspeaker, too.As can be seen by the cast-in logo on the frame (or by looking at AC Infinity's site), this is a re-badged Cooltron fan - apparently the FA8025B11T7-96. Searching by model number, you can find datasheets with static pressure & airflow performance graphs, if you're working on the sort of project where that's important or you're the sort of person who can start planning to that sort of detail without immediately getting a headache.I included pictures of the power terminals - with and without the cable attached - as that was something I couldn't find a clear view of before ordering. While the wall end of the power cord has a polarized plug, there isn't any sort of polarity protection on the fan end - it's possible to attach the cord in either of two orientations (which Cooltron's datasheet suggests is perfectly safe), depending on which is a better fit for your project. Also visible in the shot of the terminals is an M4 threaded hole for an optional grounding screw (not included) - there's one on the opposite corner, too.If you make it to the end of the (short) manual, you'll find another unadvertised surprise waiting for you: a two year warranty. Of course, when it dies in a year and a half, I'll have completely forgotten the warranty, toss it in the bin, and go shopping for another... but it's the thought that counts... or at least that's what my mother told me every time I got a gift that I couldn't imagine myself ever using.Longevity remains to be seen, but overall the fan makes a good first impression.Well, mostly.I was disappointed to discover that, contrary to the description, it neither includes, nor makes, nor tastes like muffins, and would be a poor choice for a bake sale.