A filter arrangement for a vehicle includes a flat filter element. The filter element has a filter medium and is integrated into an interior component of the vehicle. The filter element forms a surface facing an interior of the vehicle. In an embodiment, air flows through the filter element, and the air exits through the filter element into the interior of the vehicle.

A filter arrangement for a vehicle includes a flat filter element. The filter element has a filter medium and is integrated into an interior component of the vehicle. The filter element forms a surface facing an interior of the vehicle. In an embodiment, air flows through the filter element, and the air exits through the filter element into the interior of the vehicle.

A round filter element has a filter medium body flowed through by a fluid to be purified in radial direction relative to a longitudinal axis of the filter medium body. The filter medium body radially encloses an inwardly positioned flow space. An end disk is arranged at an end face of the filter medium body. The end disk has a shaped body axially delimiting the inwardly positioned flow space. The end disk has a sealing disk arranged externally at the shaped body, wherein the sealing disk covers the shaped body and the end face of the filter medium body. The shaped body has a receiving depression that is flow-tight relative to the inwardly positioned flow space. The sealing disk has a receiving opening aligned with the receiving depression of the shaped body. The receiving depression and the receiving opening can receive a support element of a filter housing.

A round filter element has a filter medium body flowed through by a fluid to be purified in radial direction relative to a longitudinal axis of the filter medium body. The filter medium body radially encloses an inwardly positioned flow space. An end disk is arranged at an end face of the filter medium body. The end disk has a shaped body axially delimiting the inwardly positioned flow space. The end disk has a sealing disk arranged externally at the shaped body, wherein the sealing disk covers the shaped body and the end face of the filter medium body. The shaped body has a receiving depression that is flow-tight relative to the inwardly positioned flow space. The sealing disk has a receiving opening aligned with the receiving depression of the shaped body. The receiving depression and the receiving opening can receive a support element of a filter housing.

A vent assembly has a vent housing having a first axial end, a second axial end, and an airflow pathway extending from the first end towards the second end. An environmental opening is towards the second axial end for fluid communication with an external environment. An enclosure opening is towards the first axial end for fluid communication with an interior of an enclosure. A perimetric support surface surrounds the airflow pathway. A support brace extends across the airflow pathway. The support brace has a lateral support surface offset in the axial direction from at least a portion of the perimetric support surface. Filter media is disposed laterally across the airflow pathway. The filter media has a perimeter region supported by the perimetric support surface around the airflow pathway and a central region supported by the lateral support surface such that the filter media is non-planar.

A vent assembly has a vent housing having a first axial end, a second axial end, and an airflow pathway extending from the first end towards the second end. An environmental opening is towards the second axial end for fluid communication with an external environment. An enclosure opening is towards the first axial end for fluid communication with an interior of an enclosure. A perimetric support surface surrounds the airflow pathway. A support brace extends across the airflow pathway. The support brace has a lateral support surface offset in the axial direction from at least a portion of the perimetric support surface. Filter media is disposed laterally across the airflow pathway. The filter media has a perimeter region supported by the perimetric support surface around the airflow pathway and a central region supported by the lateral support surface such that the filter media is non-planar.

A portable air flow apparatus may include a base configured to be seated on a surface, a head comprising a suction inlet through which air is suctioned into the head and a discharge outlet through which the air suctioned in through the suction inlet is discharged, the suction inlet and the discharge outlet being horizontally spaced apart from each other at a right angle with respect to a vertical direction, and a column that connects the head and the base in such a manner that the head is vertically spaced from the base.

A portable air flow apparatus may include a base configured to be seated on a surface, a head comprising a suction inlet through which air is suctioned into the head and a discharge outlet through which the air suctioned in through the suction inlet is discharged, the suction inlet and the discharge outlet being horizontally spaced apart from each other at a right angle with respect to a vertical direction, and a column that connects the head and the base in such a manner that the head is vertically spaced from the base.

An air filter assembly and method of using the assembly are described. The assembly can include a filter media cartridge and a filter frame connected to the filter media cartridge. The filter media cartridge can have a cartridge body defining an internal volume, an aperture in a wall of the body, a supply roller for supplying filter media, and a take-up roller for receiving the filter media. The filter frame is configured for an air handler filter slot of an HVAC system. The filter media can extend about the longitudinal axis of the filter frame from and back to the filter media cartridge such that a double layer of the filter media covers an air flow opening defined by the filter frame. The filter frame can have a pair of side frame sections, each having an expansion joint that allows the side frame section to be lengthened or shortened.

An air filter assembly and method of using the assembly are described. The assembly can include a filter media cartridge and a filter frame connected to the filter media cartridge. The filter media cartridge can have a cartridge body defining an internal volume, an aperture in a wall of the body, a supply roller for supplying filter media, and a take-up roller for receiving the filter media. The filter frame is configured for an air handler filter slot of an HVAC system. The filter media can extend about the longitudinal axis of the filter frame from and back to the filter media cartridge such that a double layer of the filter media covers an air flow opening defined by the filter frame. The filter frame can have a pair of side frame sections, each having an expansion joint that allows the side frame section to be lengthened or shortened.