3M Filtrete Electrolux U HEPA Vacuum Filter - 1 filter Fits vacuum models ELECTROLUX* Nimble* (EL8600 Series Upright) HEPA filters are designed to meet industry recognized HEPA Standards. HEPA filters help trap 99.97% of all airborne pollutants 0.3 microns or larger, including household dust, pet dander, grass and ragweed pollen, dust mite debris and other microscopic allergens. Vacuum Filters should be replaced every 30 to 60 days for optimium performance. All vacuum brand and model names are registered trademarks of vacuum manufacturers.