The Nilfisk-ALTO 47233 dust bag pack contains 5 original replacement bags specifically designed for the Nilfisk-ALTO SQ550 series industrial wet/dry vacuum cleaners. These high-quality paper filter bags ensure efficient collection of dust and debris, maintaining the vacuum's suction power and protecting its motor from fine particles. Designed for durability and optimal filtration in demanding industrial environments, these bags are essential for consistent performance and longevity of your SQ550 vacuum.