This is a 3-D printed plastic 30mm fan mount and hardware for mounting the fan. We recommend an aluminum housing 30mm fan (do not use plastic fans for this case).
Mount the fan with the included 16mm BH to the mount. Set the fan in the desired position next to the motor and mark your holes. The are spacer 36mm apart. Drill or ream 3mm holes for the screws and install! Mounts with button head M3x8mm thru the side guard, so you will have 2 exposed button head screws on the raised area (they don't drag on the ground). You can swap out the screws and counter-sink the plastic if you desire!