Micro-filtration vacuum cleaner bags fit Electrolux upright vacuums that take style U bags. Sanitaire UP-1 uprights and P1 / 6600 serires. Proteam, Prolux, ProForce, 1500 and 150XP models. ProCare 15 and 15XP models and Pullman Holt UV-3. Micro-filtration bags. 99.7 percent filtration. Traps microscopic particles and allergens. Replacement for parts 56100919 and 100919. 10 pack of micro-filtration vacuum cleaner bags made by EnviroCare Commercial.