Features: The air filter material effectively absorbs airborne debris, pollen, dust particles and hair. This also helps extend the life of the equipment. The replacement filter's design allows for straightforward and easy installation. It only takes a few minutes to replace old or broken filters, install directly, plug and play. Specifications: Material: polyester cotton Color: blue and white Size: about 16 x 6 x 0.59 inches/ 40.64 x 15.24 x 1.5 cm Package includes: 10 x RV ac air filter Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. Rated for 90 days of use. Depending on the actual situation, it is recommended that you replace the filter every 1 to 3 months.