The facility includes a first connection mechanism connecting a filter unit to a floor discharging section to establish communication between an opening portion of the floor discharging section and an upper face opening portion of the filter unit and a second connection mechanism connecting the filter unit to an exhausting chamber to establish communication between an opening portion of the exhausting chamber and a side face opening portion of the filter unit. The first connection mechanism includes a seal portion that comes into contact with an entire circumference of an outer face of an upper end portion of the filter unit, thus preventing leakage of exhaust gas. The seal portion includes an introducing portion for introducing the upper end portion of the filter unit to the seal portion from a horizontal direction.

A breathing mask for being worn on the face includes a filtration mechanism configured to filter out particles having a diameter larger than a first predetermined value; a connecting mechanism; and a removable nano-porous hydrophobic membrane configured to be removably attached to the filtration mechanism with the connecting mechanism. The nano-porous membrane is configured to filter out particles having a diameter larger than a second predetermined value, which is different from the first predetermined value.

Air cleaner assemblies, components, features and methods of assembly and use are described. Example air cleaner assemblies are depicted and described in which a main filter cartridge sealing surface is recessed from an open end of a housing body. An access cover of the housing is configured with a portion extending inwardly to engage a main filter cartridge portion and bias it against the main filter cartridge sealing surface. In selected assemblies, the portion of the access cover extending inwardly toward the main filter cartridge, is a precleaner having flow separator tubes therein.

An air cleaner assembly is disclosed, along with related methods. In one aspect, the air cleaner assembly has a housing including a housing body and a removable cover that together define an interior volume for holding a filter cartridge. The housing body can include a first plurality of lugs, wherein each of the first plurality of lugs has a first engagement surface disposed at a first angle that is oblique to a rotational plane of the cover. A second plurality of lugs can be provided on the cover, wherein each of the second plurality of lugs has a second engagement surface disposed at the first angle. A lock mechanism can also be provided that is disposed on the cover, wherein the lock mechanism includes a lock member axially movable between a locked position and an unlocked position to selectively secure the cover to the housing body.

A brake dust particle filter for a brake caliper of a disc brake assembly, wherein the brake caliper comprises a lining inspection opening, closes in a mounted state thereof the lining inspection opening at least partially with precise fit. The brake dust particle filter is provided with a filter medium support that supports a filter medium. A brake caliper provided with the brake dust particle filter in the lining inspection opening is arranged across the brake disc of the disc brake assembly.

An air filter assembly includes a filter element having at least one variable dimension, and a frame for engaging and supporting the filter element. The frame may include a plurality of linear segments forming a rectangular configuration, and a plurality of clips for connecting the linear segments together at corners thereof. The linear segments may be L-channel segments, C-channel segments, or may be of other form. Clips may be used for connecting the linear segments together at the corners. The filter element may have a pattern of creases or fold lines to facilitate folding thereof from an expanded configuration to a reduced configuration. A grate may be included for spanning an area bounded by the frame to support the filter element. The grate may have multiple arms and a central hub. An edge treatment may form a seal between the filter element and the frame.

A filtration assembly includes a filter housing and a filter element. The filter housing includes a base and a cover including an underside having one or more retainer features. The cover is removably coupled to the base. The filter element is removably installed within the base when the cover is coupled to the base. The filter element includes filter media and an endplate coupled to one end of the filter media. The endplate includes an outer perimeter and one or more engagement features protruding from the outer perimeter. The one or more engagement features engage the one or more retainer features in the cover upon installation of the endplate into the cover, thereby coupling the endplate to the cover.

An air filtration panel is used in an information handling system (IHS) rack within a modular data center. The air filtration panel includes an air filter and a filter frame. The filter frame has a lateral width at least as wide as a transverse opening in a four-post rack. The four-post rack has left and right flanges respectively coupled to a pair of posts of the four-post rack. Each of the left and right flanges has vertically aligned holes. The filter frame includes a channel that receives and contains an outer edge of the air filter. The filter frame left and right surfaces each having fastener through-holes spaced to align with and mount to respective holes in the corresponding one of the left and right flanges of the four-post rack.

Various embodiments of a case for holding an e-cigarette and a removable filter cartridge are disclosed. The removable filter cartridge may slide into a cavity that is formed within the case to house the filter. The cavity may be formed to conform to the outer dimensions of a portion of the filter, such that the filter slides into the case. A mouthpiece may be integral to the filter to mate with the case in a manner that provides an attractive and smooth exterior when the filter is mated within the case.

A gas filtering device includes an element and a case. The element includes a filter that filters a gas and a frame that holds a periphery of the filter. The case accommodates the element. The case includes a first member and a second member that are coupled to each other with the element interposed therebetween. The first member includes a frame holder that holds a periphery of the frame when the first member is coupled to the second member, and a temporary holder that performs temporary holding of the frame so that a part of the frame is separated from the frame holder and the frame is curved when the first member is not coupled to the second member. The second member includes a temporary-holding canceller that cancels the temporary holding of the frame by the temporary holder when the second member is being coupled to the first member.