While ordinary paper bags can pass as much as half of problem particulates such as dust, dander, mould, and pollen back into the air, DVC Allergen Performance Bags capture up to 100 percent of these particles down to one micron. Bags are ideal for homes with allergy sufferers, asthmatics, children, and pets. Notice a great improvement in your air quality with repetitive use. Synthetic Filter Media will not support the growth of mould, fungus, and bacteria. 3-Ply construction is stronger than paper and will not tear during use. Fits all Riccar 2000, 4000, and R series upright models and certain Vibrance vacuums. Fits Simplicity 5000 and 6000 series Type A bags. Replaces Riccar and Simplicity part numbers RAH-6, SAH-6, C13-6, C13-12, S6-3, and S6-12.