Keep your bissell™ air 220 or air320 air purifier running at its best by replacing the activated carbon filter every 6 months. This filter has a unique honeycomb shape that's filled with activated carbon pellets to capture odors and VOCs. Activated carbon filter replacement for the Bissell air220 and air320 air purifiers. Regularly replacing this filter with a genuine Bissell replacement filter means your machine can continue capturing cooking odors, common household odors, pet odors, and VOCs. Bissell® proudly supports Bissell pet foundation® and its mission to help save homeless pets. When you buy a bissell® product, you help save pets, too. We're proud to design products that help make pet messes, odors, and pet homelessness disappear.