Eureka replacement vacuum bag. From the air your vacuum pulls through the bag, Filtrete Micro allergen vacuum bags capture 94\% of particles larger than 1 micron size, including dust mite debris, grass, and ragweed pollen. They also capture 57\% of particles between 0.3 and 1 micron in size, including household fibers and other microscopic allergens. Fits models: Eureka 4100, 4300-4600, 5180, and S4170 Series uprights. 3 bags per package.