Vehicle cabin filter assembly

A vehicle cabin filter assembly comprising:

• a housing;
• and
• a plurality of filter modules mounted to the housing, wherein:
• the plurality of filter modules comprises a first filter module, a second filter module positioned downstream of the first filter module, and a third filter module positioned downstream of the second filter module,
• the first filter module comprises a first particulate filter element and a second particulate filter element, the second particulate filter element being positioned downstream of the first particulate filter element and having a separation efficiency higher than the first particulate filter element,
• the second filter module comprises a gas filter element sandwiched between a first particulate filter element and a second particulate filter element, the second particulate filter element being positioned downstream of the first particulate filter element and having a separation efficiency higher than the first particulate filter element,
• the third filter module comprising a particulate filter element,
• the second filter module has a separation efficiency higher than the first filter module, and
• the third filter module has a separation efficiency higher than the second filter module.