Wanted to make a desk fan for a 120x25mm axial. This one may be a bit - overkill, but I like the way it turned out. Flow is laminar and felt well across the room.

Designed for the Noctua a12x25 with the dampeners on, but should fit most any 120mm fan. (Pictured here with a PowerYear 3000rpm) Minor known issue - the Noctua has 7mm fillets on the corners, and some fans may have less, and might need to be filed a bit more round on the corners. (There is not much room between the fan area and the outer edge, so I could not make it any larger)

One bolt will open it up to remove the fan.

Mounting linkage allows for -30/+10°.

Threads are 12x1.75mm and should work well as printed.