This 1-year supply of the Honeywell HEPA filter R helps capture up to 99.97% of microscopic allergens, 0.3 micron and larger; and carbon pre-filters A effectively deodorize the air and trap larger particles such as dust, lint, fibres, and pet hair & dander. Enjoy the many comforts associated with surrounding yourself with a pristine breathing experience all year round. These genuine Honeywell filters fit model series: HPA200C, HPA201 series, HPA204C, HPA250BC, HPA3200 series, HPA5200 series, HPA5220 series, HPA5250WC & HPA5250BC. This filter kit includes 6 filters: 4 pre-filters + 2 HEPA filter.