Smart Choice products are manufactured by Electrolux USA. This brand are high quality replacement filters and bags, and usually have the same, if not better quality then the original manufacturers products, but at half the price. Smart Choice Premium bags are a great choice for homes with breathing issues such as asthma or allergies. These bags will capture 30% more airborne particles then single ply standard vacuum bags. The Eureka AA bags fills from the top of the bag, or the hose in the bag is at the very top, as opposed to other which have the hole at the top. The top-fill feature will ensure you throw away a 100% completely full bag out. Average home uses 12 bags a year, or once a month. For homes with breathing issues or allergies, Electrolux has designed this to bag to seal itself shut, before replacing the bag. Simply move the cardboard tab over the opening of the bag, and THEN remove the bag from the vacuum These bags will fit the Following Eureka Victory upright models; 4100, 4300, 4350, 4351, 4400, 4500 and 5180, 5181, 5182, 5183, 5184, 5185, 5186, 5187, 5188, 5189 series. 4321, 4325, 4326, 4327, 4334, 4335, 4337, 4340, 4341, 4350, 4351, 4352, 4372, 4377, 4380, 4381, 4383, 4384, 4386AT-1, 4387, 4388AT,4440, 4441, 4455, 4460, 4461, 4464, 4465, 4466, 4469, 4470, 4471, 4472, 4475, 4476, 4478, 4479, 4480, 4481, 4482, 4483, 4484, 4485,4489AT, 4470, 4471, 4475, 4476, 4478