Genuine Electrolux EL042 HEPA Air Cleaner Filters for ELAP30D7PW, 1 HEPA filter Contains 1 HEPA Filter and 4 Carbon Filters Fits Electrolux Pure Oxygen Allergy 300 Air Cleaner, ELAP30D7PW Replaces EL042 Filter Set Replace HEPA filter every 12 months and Carbon filter every 3 months for optimum performance