Case mounting frame for the NanoPi Neo Air.

Allows you to attach to the 3D printer frame with T-nuts and M3 screws.
This is my first 3d printable model.

Case: https://www.thingiverse.com/thing:1998968

Update: 

In the new version, I rounded two corners, making it fit the shape of the case more closely. Such a small detail, but I like it more now.