This BLUEAIR Blue Pure F4MAX AllergenBlock replacement filter is designed to keep your air purifier performing at its best by capturing common household allergens. Ideal for homes with pets or allergy concerns, it helps create a cleaner, healthier living space you can feel confident in.

• BLUEAIR replacement air purifier filter compatible with 411a Max and 411i Max.

• AllergenBlock filtration targets pollen dust and pet dander.

• Cylindrical pleated filter design for optimal airflow and efficiency.

• Designed for quick and easy filter changes.