GDSTIME AXIAL Fan 17251, 110V 120V AC 170mm Fan, Ventilation Exhaust Projects Cooling Fan

Decent large copier type fan. It's loudness means it has to be in a equipment room or equivalent . Not in a office. I'm using it with a speed controller and at a non modulated speed it is balanced well for the price. If it' modulated it goes slightly out of balance at mid range and wines a lot like most motors in air cleaners do. At full power the air noise covers up the wine. I actually would not have bought this if I was aware it shipped from china because I have had other defective returns get rejected by china customs. U.S dollars can go in but not out of china. Lol. Unless it's a small dollar risk or worth the risk, I don't buy directly from china anymore.

I use it as a replacement part for a refrigerant revorey machine so far so good.

Moves a lot of air but is noisy and vibrates a lot causing metal panels to vibrate. Fan does not seem balanced.

I have an equipment case with several servers in it that needed an additional ventilation fan, so when this item became available, I ordered it. Here is what I found:1. The fan is very well made and the case, fan housing, and protective screen (a seperate item) is made of metal. The fan blades and hub that it is part of is made of plastic.2. The fan motor comes with a quick wiring connector and a US type AC plug cable that is approximately 48 inches long. This is more than long enough for my needs in the equipment cabinet.3. Once the fan was installed and connected, I powered it up and it is moving a lot of air through the cabinet! The motor is quiet relative to the amount of air that it is moving. Yes, there is air-movement noise, but there is very little fan noise.I am very happy with this fan and I would recommend it if you have need for this product.

I needed a fan for a project that moved a lot of air, this one fit the bill nicely.It came with the shown items and was easy to assemble.It moves a lot of air but because of that, it's a bit louder than a typical PC fan but I was expecting that.So far, it's running very well, I'll update my review if things change

It works and really moves some air. A bit noisy. Install really varies by application. Simple pig tail connector and 2 prong plug. Well made, non warping heavy metal housing.