The Filtrete 67833-4 is the correct replacement filter for the following:
The Filtrete 67833 - Electrolux Type U HEPA Filter is a replacement vacuum filter for the Electrolux Nimble EL8600 Series. This Electrolux vacuum filter features HEPA filtration that captures 99.97% of airborne contaminants, such as mold spores, pet dander, grass, and ragweed pollen, as small as 0.3 microns. This Electrolux HEPA filter features media constructed with electrostatically charged fibers that attract particles.
Filtrete 67833 - Electrolux Type U HEPA Filter specifications: