True Hepa Replacement Filter

The Honeywell universal True HEPA replacement filter is 99.9\ effective at capturing particles such as household dust, smoke, pollen, mold spores, and cat dander. This universal filter is designed to replace Honeywell True HEPA filter model No. HRF-11, 20500, and 20590. Filters should be replaced every 1 to 5 years depending on use. For use with Honeywell air purifier model series: 10500, 10590, 17000, and 50100. For air purifier model No. 10500 (or HEPA filter model No. 20500) 2 model No. HRF-D1 filters are needed. For air purifier model No. 1700 (or HEPA filter model No. 20500), 2 model No. HRF-D1 filters are needed. For air purifier model No. 17005 (or HEPA filter model No. 20500), 2 model No. HRF-D1 filters are needed. For Air Purifier model No. 17352 (or Hepa filter model No. 83154) 2 HRF-D1 filters are needed. Each model No. HRF-11 contains 1 HEPA filter and 1 gasket.