Additional Details ------------------------------ Product description: Designed to fit with or replace genuine original (OEM) manufacture part numbers: 611780, 900005, and 613325. Designed to fit these vacuum models and more: Castex, Nobles, Tennant commercial vacuums, Nobles Portapac 1 & 2 900005, Nobles Strap-A-Vac II, Tennant 3000/3050, Castex 900005, and Portapac.