this system comprises an air - ventilating and cleaning element positioned with a housing . the housing contains multiple vents in the housing walls . the vents serve as channels that enable air to flow into and out of the air - ventilating device . the air - ventilating and cleaning element can vary and can range from a simple air ventilator to and an air purifier . the cleaning element can contain a filter element to further facilitate cleaning of the air . the cleaning element can be positioned in the housing on a track or pin to allow for movement of the cleaning element within the housing . movement of the cleaning element may be desired in order to more efficiently clean air channeled through the device . because of the ability to move the cleaning element , air flow through the device can be adjusted depending on a particular cleaning application .