OES1553 Features: * Air Filter * 85pct Filtration media 85pct, 5pct cardboard and 10pct metal * Affordable odor reduction built-in * High performance allergen air filter * Extended surface area for high capacity filtration * Electro statically charged pleated material * Lasts up to 90 days * Unscented odor fighting power * Made in USA * Reduces airborne allergens * Protects against pet dander