3-Stage Filtration perfect for improving your house air quality. | Pre-filter Helps to catch hairs and fibers. | H13 Grade Hepa Filter catches most particles and pollen. | Unique honey-comb carbons designed filter absorb household smells. | To keep your machine running in best functional, we recommend that your filters be replaced every 6 months.

&q;:&q;Item: For Bissell Air320 Air220 Part# 2678,2804 and Part# 2677. Package Contents? 1 * Pre filter 1*H13 grade true hepa filter, 1* activated carbon filter.PROP 65 WARNING: This product can expose you to some kind of chemical, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.&q;,&q;