Looking for a reliable replacement filter for your Winix HR900 Air Purifier Ultimate Pet? Look no further than our True H13 HEPA Filter Set. Designed to effectively capture pet dander, hair, and other airborne allergens, our filter set includes both the Filter T and Filter U to keep your air purifier performing at its best. Plus, as a factory-direct supplier, we're able to offer competitive pricing without sacrificing quality. Make the smart choice and choose our True H13 HEPA Filter Set for uncompromising air purification.