Adapted mount that fits 40mm fan. For all those who have no 30mm fan.

thingiverse

Dexus has put together an outstanding design for Bowden that fits E3D V5, but I didn't have a 30mm fan on hand, so I had to make some adjustments. First, I removed the two holes designed specifically for mounting the fan and added two new ones that allow the top and bottom parts of the printer head to connect, along with room for the fan itself.