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: HPA094 series, HPA100C, HPA101 series, HPA104C, HPA105 series, HPA3100 series, HPA5150WC & HPA5150BC. This filter kit includes 5 filters: 4 pre-filters + 1 HEPA filter.