A hard disk drive recirculation filter is disposed on a housing surface of
a disk drive assembly oriented adjacent to one or more disk surfaces. In
one embodiment, the recirculation filter is a pocket filter having a
filter support component and a filter element. The filter support
includes an inlet, a top surface and a bottom surface, where the bottom
surface is used to adhere the pocket filter to the housing surface. The
top surface is adapted to adhere the filter element thereto, thereby
forming a pocket into which rotationally-induced airflow may enter.