This pack contains 10 high-quality paper dust bags compatible with Numatic Henry, Hetty, James, and Quick Clean vacuum cleaners. These bags feature double micro-filtration technology, capturing up to 99% of household dust, pollen, mites, and microscopic particles as small as 5.0 microns. They are designed for easy disposal and help restore your vacuum's suction power to like-new performance. These are non-genuine replacement bags manufactured by Qualtex, equivalent to bag type NVM1B & NVM1C. They are recycled, strong, and durable with a large capacity for collecting dirt and debris.