Abstract: A panel filter is provided. The panel filter can have extended life or higher dust holding capacity by one or more of the following provisions of (a) placing the dimpled pattern (compressed region) on the downstream side and outlet face of the media, (b) using the dimpled media in combination with adhesive spacers and embossments, (c) selection of a media that is depth loading rather than surface loading, (d) operating the pleater/embossing assembly in a manner so as to maintain integrity of the dimples and/or other features as described herein.

Abstract: A panel filter is provided. The panel filter can have extended life or higher dust holding capacity by one or more of the following provisions of (a) placing the dimpled pattern (compressed region) on the downstream side and outlet face of the media, (b) using the dimpled media in combination with adhesive spacers and embossments, (c) selection of a media that is depth loading rather than surface loading, (d) operating the pleater/embossing assembly in a manner so as to maintain integrity of the dimples and/or other features as described herein.

Abstract: A filter assembly including a rectangular inlet frame having a rectangular inlet opening configured to receive a primary filter and optionally a prefilter. The filter assembly may include a rectangular outlet frame and a housing body. The rectangular inlet frame may also be used as a housing by itself to support and house primary filters and prefilters. A gridwork including one or more grid dividers may be used in the rectangular inlet frame to provide 2 or more openings for receipt of filters.

Abstract: A filter cartridge is provided. The filter cartridge includes a filter element comprising a filter media, and the filter element extends between an inlet face and an outlet face. The filter element defines a periphery surrounding the filter media. The filter cartridge also includes a border frame including a plurality of side panels, and the side panels are independently molded-in-place along the periphery of the filter element. Adjacent members of the side panels are joined together along a plurality of mold interface seams, and the mold interface seams are spaced around the periphery. The plurality of side panels are embedded in and seal the periphery of the filter element such that fluid flow inside the border frame is directed to pass through the filter media for filtering in order to pass from the inlet face to the outlet face.

Abstract: A filter assembly including a rectangular inlet frame having a rectangular inlet opening configured to receive a primary filter and optionally a prefilter. The filter assembly may include a rectangular outlet frame and a housing body. The rectangular inlet frame may also be used as a housing by itself to support and house primary filters and prefilters. A gridwork including one or more grid dividers may be used in the rectangular inlet frame to provide 2 or more openings for receipt of filters.

Abstract: A filter assembly including a rectangular inlet frame having a rectangular inlet opening, a rectangular outlet frame, a housing body being collapsible to have a flattened shipping state and an erect state, the collapsible housing body in the erect state being rectangular and interposed between the rectangular inlet frame and the rectangular outlet frame in an assembled state, and at least one filter having filter media installed in the rectangular inlet opening in generally sealing relation thereto and projecting from the inlet frame toward the outlet frame in the assembled state.

Abstract: A non-V bank filter for an animal confinement application such as for filtering out the porcine reproductive and respiratory syndrome virus (PRRSV) is provided. The filter may be a deep pleat of synthetic filter media with at least a MERV 14 rating and efficiency sufficient to filter out the PRRSV in high air flow applications. The media may be embossed and have spacers to provide for structural support and open filter structure for airflow. The filter can occupy less space and in some embodiments ½ or even less space than a corresponding V-Bank filter with comparable performance.

Abstract: A panel filter is provided. The panel filter can have extended life or higher dust holding capacity by one or more of the following provisions of (a) placing the dimpled pattern (compressed region) on the downstream side and outlet face of the media, (b) using the dimpled media in combination with adhesive spacers and embossments, (c) selection of a media that is depth loading rather than surface loading, (d) operating the pleater/embossing assembly in a manner so as to maintain integrity of the dimples and/or other features as described herein.

Abstract: A filter assembly including a rectangular inlet frame having a rectangular inlet opening, a rectangular outlet frame, a housing body being collapsible to have a flattened shipping state and an erect state, the collapsible housing body in the erect state being rectangular and interposed between the rectangular inlet frame and the rectangular outlet frame in an assembled state, and at least one filter having filter media installed in the rectangular inlet opening in generally sealing relation thereto and projecting from the inlet frame toward the outlet frame in the assembled state.

Abstract: A filter assembly including a rectangular inlet frame having a rectangular inlet opening, a rectangular outlet frame, a housing body being collapsible to have a flattened shipping state and an erect state, the collapsible housing body in the erect state being rectangular and interposed between the rectangular inlet frame and the rectangular outlet frame in an assembled state, and at least one filter having filter media installed in the rectangular inlet opening in generally sealing relation thereto and projecting from the inlet frame toward the outlet frame in the assembled state.

Abstract: A filter system includes a housing having an inlet opening surrounded by a sealing surface, an outlet opening. The housing may be rotational molded or be configured to be nestable with additional housings for shipping purposes. The system may also be configured such that the filter to be mounted therewith can be placed interior to the filter housing during shipment. A V-bank filter or a single-header box filter is positioned in the inlet opening, has a flange in general alignment with the sealing surface, and a plurality of filter media sections projecting away from the flange and into the housing interior. A seal is disposed between the flange of the V-bank or single-header box filter and sealing surface. A pre-filter, such as a panel filter, may be provided upstream from the primary filter.

Abstract: A filter assembly including a rectangular inlet frame having a rectangular inlet opening to receive a primary filter and optional a prefilter. The filter assembly may include a rectangular outlet frame and a housing body that is collapsible to have a flattened shipping state and an erect state. The rectangular inlet frame may also be used as a housing by itself to support and house primary filters and prefilters. A gridwork including one or more grid dividers may be used in the rectangular inlet frame to provide 2 or more openings for receipt of filters.

Abstract: A filter assembly including a rectangular inlet frame having a rectangular inlet opening to receive a primary filter and optional a prefilter. The filter assembly may include a rectangular outlet frame and a housing body that is collapsible to have a flattened shipping state and an erect state. The rectangular inlet frame may also be used as a housing by itself to support and house primary filters and prefilters. A gridwork including one or more grid dividers may be used in the rectangular inlet frame to provide 2 or more openings for receipt of filters.

Abstract: A panel filter including a generally rectangular border frame having four sides; a filter media supported by the border frame and extending within the border frame; and a key formed into the border frame is provided. The key is used to properly determine if the filter is appropriate for mounting in a housing. It may also be used for properly orienting the filter within the housing. A system including the housing is also provided. Methods of providing biosecurity for animal confinements are also provided.

Abstract: A panel filter is provided such as for HVAC applications in which one of the cut edges is frayed and attached with adhesive to the inner peripheral surface of a paper board frame. The frayed edges may facilitate better gluing of pleated filter medium to the frame especially for self-supported filter media applications and may increase structural rigidity and sealibility as a whole. Frayed edges also provide flexibility to assist in installation of a card of pleated filter medium into a paper board frame.

Abstract: A panel filter is provided. The panel filter can have extended life by virtue of more filter media packed into a panel filter in a way that maintains open flow structure and with filter media selection that does not cause undue restriction.

Abstract: A filter system includes a housing having an inlet opening surrounded by a sealing surface, an outlet opening, and a door having a seating surface surrounding a through-port opening. The door is movable between an open and closed position and a closed position. In an embodiment, a hinge connects the door to the housing, such that the door pivots between open and closed positions about the hinge. A panel pre-filter is seated along the seating surface of the door. A V-bank filter is positioned in the inlet opening, and has a flange in general alignment with the sealing surface, and has a plurality of filter media sections projecting away from the flange and into the housing interior. A latch is adapted to keep the panel pre-filter positioned inline and upstream of the V-bank filter. A seal is disposed between the flange of the V-bank filter and the sealing surface.

Abstract: A filter for an electronics cooling unit of a telecommunications base station, the electronics cooling unit adapted to receive fresh air into a housing of the cooling unit through an opening communicating with the external environment. The filter includes a structural support configured to be mounted to said housing, a gasket sealingly engaging the structural support and adapted to engage the housing; and a filter media supported by the structural support, the filter media being free of a membrane type layer and including a fiber entanglement selected to prevent ingress of water sufficient to pass a salt fog test consistent with GR-487-CORE and in accordance with ASTM B 117.

Abstract: A panel filter including a generally rectangular border frame having four sides; a filter media supported by the border frame and extending within the border frame; and a key formed into the border frame is provided. The key is used to properly determine if the filter is appropriate for mounting in a housing. It may also be used for properly orienting the filter within the housing. A system including the housing is also provided. Methods of providing biosecurity for animal confinements are also provided.

Abstract: A filter for an electronics cooling unit of a telecommunications base station, the electronics cooling unit adapted to receive fresh air into a housing of the cooling unit through an opening communicating with the external environment. The filter includes a structural support configured to be mounted to said housing, a gasket sealingly engaging the structural support and adapted to engage the housing; and a filter media supported by the structural support, the filter media being free of a membrane type layer and including a fiber entanglement selected to prevent ingress of water sufficient to pass a salt fog test consistent with GR-487-CORE and in accordance with ASTM B 117.