A filtering system may include a holder and an exchangeable filter element. The filter element may include a first end plate, a second end plate, and a filtering material arranged between the first end plate and the second end plate that separates a filtered zone from an unfiltered zone. The second end plate may protrude beyond the filtering material. The filtering system may further include at least one filtered opening and at least one unfiltered opening, and the at least one filtered opening may be disposed in the filter element. The filter element may lie detachably on the holder, and the holder together with the second end plate, the filtering material and an outer wall may enclose the unfiltered zone.

A filtering system may include a holder and an exchangeable filter element. The filter element may include a first end plate, a second end plate, and a filtering material arranged between the first end plate and the second end plate that separates a filtered zone from an unfiltered zone. The second end plate may protrude beyond the filtering material. The filtering system may further include at least one filtered opening and at least one unfiltered opening, and the at least one filtered opening may be disposed in the filter element. The filter element may lie detachably on the holder, and the holder together with the second end plate, the filtering material and an outer wall may enclose the unfiltered zone.

The invention relates to flame protection filters (F) consisting of a number of layer sequences (S1, S2, S3), wherein each of the layer sequences (S1, S2, S3) consists of filter layers (1, 2) arranged one on top of the other. Every layer sequence (S1, S2, S3) consists of a first filter layer (1) and a second filter layer (2) made from a material arranged in the shape of a grating with openings (1.1, 2.1) having an opening width (1.11, 2.11) in each instance. The first filter layer (1) having a free lateral surface (6.3) is a first end filter layer (3) with a first end filter opening width (3.11) and the second filter layer (2) having a free lateral surface (6.4) is a second end filter layer (4) with a second end filter opening width (4.11). The second opening width (2.11) of a second filter layer (2) is smaller than the first opening width (1.11) of a first filter layer (1). The second filter layer (2) is opaque. The invention further relates to an arrangement (10) of at least two flame protection filters (F1, F2) and a housing (9) which is encapsulated in a pressure-tight manner and with at least one flame protection filter (F, F1, F2).

The invention relates to flame protection filters (F) consisting of a number of layer sequences (S1, S2, S3), wherein each of the layer sequences (S1, S2, S3) consists of filter layers (1, 2) arranged one on top of the other. Every layer sequence (S1, S2, S3) consists of a first filter layer (1) and a second filter layer (2) made from a material arranged in the shape of a grating with openings (1.1, 2.1) having an opening width (1.11, 2.11) in each instance. The first filter layer (1) having a free lateral surface (6.3) is a first end filter layer (3) with a first end filter opening width (3.11) and the second filter layer (2) having a free lateral surface (6.4) is a second end filter layer (4) with a second end filter opening width (4.11). The second opening width (2.11) of a second filter layer (2) is smaller than the first opening width (1.11) of a first filter layer (1). The second filter layer (2) is opaque. The invention further relates to an arrangement (10) of at least two flame protection filters (F1, F2) and a housing (9) which is encapsulated in a pressure-tight manner and with at least one flame protection filter (F, F1, F2).

An air filter module for modularly mounting angled air filters. The module includes a top plate, bottom plate, left and right front corners with the corners defining perpendicular side walls, angled filter end retention walls, angled side walls, and a back wall with angled side walls, parallel end retention walls, and a positioning guide. The positioning guide is constructed from clips or a guide face and an inner side positioning wall.

Embodiments provide a filter with a generally rectangular, non-cylindrical profile. The filter may have multiple pleat packs positioned between pleat covers that define regions and flow channels in a cavity of the filter body. The pleat covers have openings that allow a fluid to flow through the multiple pleat packs via parallel flows or series flows. End caps bonded to the body define flow passages for directing the fluid from an inlet to an outlet via the pleat packs for series or parallel filtration. The pleat packs may be made of the same or different materials and may be configured with the same or different heights based on flow requirements. A cage or a separator may be positioned between the pleat packs. The pleat packs may be made of a continuous pleated membrane with bridges defining a space between the pleat packs to accommodate the cage or separator.

A high-efficient particulate air filter assembly including a high efficient particulate air filter for filtering the intake air as it enters an air purifying system is provided. The air filter assembly can further include a housing configured for use in an air purification system; a first prefilter positioned in the housing upstream from the particulate air filter; and an electrostatically charged substrate positioned in the housing downstream from the particulate air filter. The air filter assembly can further include a second prefilter having a paper layer; a carbon layer; a zeolite layer; a mesh layer; and a foam layer.

A filter element includes first filter media, second filter media, a frame, and a seal member. The frame is coupled to the first filter media and the second filter media, the frame securing the first filter media and the second filter media into a V-shape. The seal member is attached to and extends from the frame. The seal member includes a U-shaped channel structured to receive a ridge of a housing when the filter element is installed in the housing. The seal member is structured to form a seal between the filter element and the housing when the filter element is installed in the housing.

A method of packaging a filter media that is pre-folded for insertion is a filter assembly is provided.

A filter assembly has a first housing having a plurality of recesses provided therein and a second housing having a plurality of ribs provided on an inner surface thereof. When the first and second housings are in an engaged configuration, the ribs are receivable in the recesses of the first housing thereby securing a filter media in the filter assembly.