Breville Antiviral HEPA-13 FilterBreville Air Filters now with advanced AntiViral protection reduces SARS COV 2 and Influenza A Viral Particles. Key Features Compatible with Smart Air models LAP300, LAP308, LAP408 3 Layer filter Removes 99. 97% fine particles and allergens down to 0. 3m 360 Degrees air circulation design Recommended replacement every 6 to 12 months, or 4320 hours depending on frequency of use and air quality