Noctua NF-A20 shelf/table mount and ducts

Noctua NF-A20 fan duct and table clamp mount

I chose to go for table clamps on this one, bc the A20 fan is heavier than the 120 and 140mm fans. A table stand would be a lot bigger and I dont want to waste filament if I dont have to

The clamp are a bit special as it dont have any threads. The threads are in the bolt and the nut. The bolt is printed flat and is strong. It is a bit tricky to mount, but be patient.
Bolt and nut thread is M24x2. Bolt thickness is 15mm, nut thickness is 5mm.

There are 2 clamp types. Self tapping and for 7mm M4 nuts.

I used tree support for the large holes bc it didnt take that much longer to print. It might be okay without support too

The fan ducts info: 
For the first fuct I made the 15 degree angled one and it worked quite good and thought a more narrow duct would work better. 18 hours later I found out it was kinda worse.

So I went back to the shorter one and made different versions.
Some people have OCD and want it to be different, so thats what I made.
If you want it angled a special degree or something, send me a message.
You can also get the duct to be even shorter or longer. My file is parametric so its easy and fast to edit.

I didn't make it for Prusa i3 bed, but was lucky it fits.

Hardware:
Mounting arm left/right to each clamp you need:
2x M4x12

Mounting fan duct to the fan, you need (I use 4 screws):
4-8x M5x8mm+

To power it, use a 12V fan adapter. I havent made a mount for this yet.