1.5-Inch 12V DC Cooling Fan (40mm)

Passive heatsinks only go so far once a project's electronics are packed into a small enclosure without much natural airflow, and this compact 40mm fan gives a build active cooling without taking up much space. Running on a standard 12V supply makes it a natural match for 12V project enclosures, power supply boxes, and 3D printer electronics bays where a small fan keeps a cramped component layout from overheating. Its brushless design means no brush wear to worry about over the fan's service life, just a steady, continuous airflow for as long as it's powered.