The HEPA Replacement Filter BF35 is a pleated filter designed for use in air purifiers. Featuring true HEPA filtration technology, it effectively captures airborne particles to improve indoor air quality. Made with meltblown filter media, this filter is specifically designed for the HEPA-Pure Breathe Classic Smart Air Purifier, ensuring compatibility and efficient filtration performance. Perfect for maintaining a clean and healthy environment in your home, this one-pack filter provides a convenient solution for keeping your air pure and fresh.