These legs raise the Tiny Boy 30mm off the desk. I gave the fan 25mm of depth to make sure it had enough clearance so it wasn't touching any of the wires or hardware under the unit. You could adjust the screw slits to allow other sizes of fans. My fan was 80x80x25. I wired it in directly to the main.
I'm new to printing, so printing two at a time had a little bit of stringy build up. I just cleaned it up with a little file.