Engineered for HF3 / 3649A floor scrubbers, this high efficiency filter uses multi layer filtration to captures 99% of, hair, and allergen, ensuring optimal vacuum and cleaner air output Outperforms paper with resistant, compression proof design that prevents breakdowns and maintains airflows efficiency across extended use cycles Designed for homeowners, commercial cleaners, and allergy sensitive users needing stable filtration for frequent cleaning tasks across multiple surfaces Perfect for maintaining hygiene in homes, offices, hospitals, and other areas with carpets, hardwood, or flooring requiring thorough dirt removal Featuring filtration precisions and synthetic construction, the washable filter lasts 6+ months while heat / wear for consistent suction power in demanding environments