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. This filter has three layers to it, Green, Yellow, and White. This filter will NOT fit WindTunnel Models that are self-propelled models.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. This filter has three layers to it, Green, Yellow, and White. This filter will NOT fit WindTunnel Models that are self-propelled models.