VGA fan mount for x-carriage

Fan add-on for this excellent carriage design. Utilises cheap and commonly available PCB fans - I found these on Fleabay for 95 cents each. I have been running with one of these fans without a shroud on my existing Mendel Prusa and will use one each end on the new printer I am building.
The holder does have screw pilot holes printed but I find my fan just presses in without the need for screws or glue.

28 September - added a shorter arm version that fits better on the x-carriages I have desi