The Scosche FrescheAir filter replacement is the perfect solution if you need an H13 HEPA air filter for your Scosche FrescheAir air purifier. It collects 99.5% of tiny dust particles and quickly releases clean smelling air, helping keep your vehicle or room healthy. We recommend replacing the filter every 3 to 6 months based on usage. This filter works only with the Scosche AFP2-SP model and includes a user manual and one-year warranty. While the filter is covered for a year, the best results come from changing it every 3 to 6 months.