The ECOGARD XC36071C Premium Cabin Air Filter is engineered to enhance the air quality within your vehicle by effectively filtering out airborne contaminants. Designed for specific Audi and Porsche models, this filter measures 13.07" in length, 10.78" in width, and 2.16" in height, ensuring a precise fit for optimal performance. Its advanced filtration system removes up to 99.5% of dust, pollen, air pollution, allergens, pet dander, and other airborne particles, providing a cleaner and healthier cabin environment. The inclusion of activated carbon media further neutralizes odors, eliminating musty smells and ensuring a fresher interior. Installation is straightforward, typically taking just a few minutes, and the filter is compatible with various Audi and Porsche models, including the Audi Q5 (2009-2017), A4 Quattro (2009-2016), A5 Quattro (2008-2017), A4 (2009-2016), S5 (2008-2018), S4 (2010-2018), and the Porsche Macan (2015-2017). Regular replacement of the cabin air filter is recommended every 12,000 to 15,000 miles, or more frequently if the vehicle is exposed to heavy road debris, to maintain optimal air quality and HVAC system performance.