Electronic enclosure filter

A multilayer filter assembly for use in an electronic enclosure, the filter assembly comprising:

• a first layer containing a particulate removal element;
• a second layer containing an electrostatic filter element;
• and
• a third layer comprising at least two adsorbent regions containing adsorbent material;
• wherein the first and second layers provide at least partial retention of the adsorbent material, and wherein the three layers are configured to permit substantial bending of the filter assembly at a point between the two adsorbent regions.

A multilayer filter assembly for use in an electronic enclosure, the filter assembly comprising:

• a first filtering portion configured and arranged for placement over an opening in the electronic enclosure;
• and
• a second filtering portion configured and arranged for filtering air circulating in the electronic enclosure;
• wherein the first and second filtering portions are integrally formed and joined together along a flexible joint configured to allow the first and second filtering portions to be installed in the electronic enclosure at an angle of less than 180 degrees to one another.

A multilayer filter assembly for use in an electronic enclosure, the filter assembly comprising:

• a first filtering portion configured and arranged for placement over an opening in an electronic enclosure;
• a second filtering portion configured and arranged for filtering air circulating in the electronic enclosure;
• and
• the first and second filtering portions positioned within a cover containing a unitary first layer and a unitary second layer, the two layers bonded along their edges such that the first and second filtering portions are contained and separated from one another.

An electronic enclosure and filtration assembly, the enclosure and assembly comprising:

• an enclosure having at least one wall and a hole in the wall;
• a filter assembly having a first portion and a second portion,
• the first portion adhered to the wall of the enclosure such that it surrounds the hole and provides filtration for air entering the enclosure thorough the hole, and
• a second portion providing filtration of air circulating within the enclosure;
• wherein the first and second portion are joined by a unitary cover layer.