Genuine Electrolux EL041 Carbon Air Cleaner Filter for ELAP15D7PW, 4 Carbon filters Contains 1 HEPA Filter and 4 Carbon Filters Fits Electrolux Pure Oxygen Allergy 150 Air Cleaner, ELAP15D7PW Replaces EL041 Filter Set Replace HEPA filter every 12 months and Carbon filter every 3 months for optimum performance