Brand Micro-Lined Filter bags to fit Eureka Style F&G bags. Fits Eureka Early model upright vacuums with bottom fill bags, series 1400, 1900, 2000, 4000 & 5000. Also fits Sanitaire uprights with bottom fill bags, such as series S600 and S800. Bags sold 3 in a package. Micro-Lined Bags capture microscopic particles and germs and bacteria as small as 0.1 microns. Sold 12 packages of 3pk bags (36 bags total).