Abstract: Filters and filtering methods for placement in an electronic enclosure, such as a hard disk drive housing, are disclosed. In one embodiment the filter includes a housing having a top, a base, and at least one sidewall extending from the top to the base, the housing defining an inlet port and an outlet port through the sidewall, and a breather port in the base, the housing further defining an internal volume. Adsorbent filter media is disposed within the internal volume of the housing such that the housing defines a first path for flow of fluid through the breather port in the base to the filter media and a second path for flow of fluid through the inlet port, into contact with the filter media, and out the outlet port.

Abstract: Filters and methods of using the filters, as well as assemblies having the filters are disclosed.

Abstract: A filter construction for use in a disk drive enclosure. The filter construction includes a first filter portion that removes or reduces contaminants entering the disk drive enclosure; the filter construction further includes a second filter portion that removes or reduces contaminants present within the disk drive enclosure. In one embodiment, the first filter portion has an adsorbent filter, such as a breather filter, positioned over the disk drive port that extends from the enclosure to the exterior of the enclosure. A diffusion channel can be combined with the adsorbent filter. The second filter portion includes an adsorbent filter, such as a recirculation filter, which allows air or gas to flow through with little resistance.