Customized version of http://www.thingiverse.com/thing:204007

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=204007

Using the following options:

screw_spacing = 32
mount_screw = 1.7
extension_screw = 1.7
extension_mount_angle = 90
mount_length = 8
extension_length = 30
mount_angle = 90
extension = 1
fan_screw = 1.7
full_plate = 0
mount_position = 15
fan_size = 40