Designed for the cleaning professional who demands high-performance parts at a competitive price. Meets or exceeds OEM standards. Product quality claims are backed with Janitized® exclusive Blue Ribbon Warranty. For Nobles®/Tennant®/Castex®. OEM/Compatible: Compatible; For Use With: Nobles® Portapac/Tennant® Backpack Paper Bag; OEM #611780.Note: This is a non-returnable item.