You are searching for Cabin Filter
The Cabin Air filter is typically a pleated-paper filter that is placed in the outside-air in take for the vehicle's passenger compartment. Some of these filters are rectangular and similar in shape to the combustion air filter. Others are uniquely shaped to fit the available space of particular vehicles' outside-air intakes. Being are latively recent addition to automobile equipment, this filter is often over looked, and can greatly reduce the effectiveness of the vehicle's airconditioning and heating performance. Clogged or dirty cabin air filters cansignificantly reduce air flow from the cabin vents, as well as introduce allergens into the cabin air stream.