Blueair 211 + Replacment Particle and Foldable Carbon Mesh Filter
Blueair 211 + Replacement Particle and Foldable Carbon Mesh Filter is used for the 211 + units to offer protection from light VOCs, gases, and odors. Since 211 combination filter has been discontinued, it has been replaced with this filter and a reuseable cage. If you purchase 2 - 211+ foldable filters, the cage is free. Just make note of it in the comment section at the time of checkout.