OES1508 Features: * Air Filter * 80pct Filtration media, 5pct cardboard, 10pct metal and 5pct plastic * First air filter with a built-in Febreze air freshener * High performance electrostatic air filter * Extended surface area for high capacity filtration * Enhanced odor reduction air filter media * Lasts up to 90 days * With Febreze built-in air freshener * Made in USA * Reduces airborne allergens