21 Replacement 391 Central Vacuum Bags for NuTone, Beam, Electrolux - Compatible with Nutone VX475, Nutone CV353, Nutone CV450, Nutone 391, Nutone CV400, Nutone CV350, Nutone 44186, Nutone CV352, Nutone CV750, Nutone CV-391, Nutone CF3918, Nutone Advantage, Beam 167, Nutone CV351, Nutone CV653 Replacement 391 Central Vacuum Bags for NuTone, Beam, Electrolux - Compatible with Nutone VX475, Nutone CV353, Nutone CV450, Nutone 391, Nutone CV400, Nutone CV350, Nutone 44186, Nutone CV352, Nutone CV750, Nutone CV-391, Nutone CF3918, Nutone Advantage, Beam 167, Nutone CV351, Nutone CV653, Nutone CV10, Nutone CV553, Nutone 110025, Nutone 110056, Nutone Classique Series, Electrolux 167, Electrolux 3067, Electrolux BU165, Electrolux V165, Beam 3067, Beam BU165, Beam V165 Replaces Nutone 391 Vacuum Bags. Does not fit the CV850. Quantity: 21 (7-Pack - 3 Vacuum Bags per Pack) Don't let dust and dirt accumulate inside the vacuum then spreading it around your house. Lengthen the life of your vacuum cleaner plus improve the effectiveness and suction of your vacuum by installing a new bag with the same great quality as the name brand but at an affordable price. We recommend replacing your vacuum bags every 30 to 60 days for best performance . Vacuuming with a high-efficiency bag cleans the air inside your house. Ideal for those who suffer from dust-related or allergic discomforts. Removes dirt, dust and allergens while you vacuum to improve the air quality of your home. Made to neutralize odors at the source, releases clean, odor-free air into your home as you vacuum. Breathe easier and feel refreshed by filtering the air inside your household leading to overall better health. Note: Please check your vacuum to make sure you are purchasing the correct parts. On Sale for a Limited Time!