Think Crucial 2 Dirt Devil F9 Washable, Reusable Vacuum HEPA Filters; Compare with Dirt Devil Part #3DJ0360000, 2DJ0360000 2 Crucial Vacuum Brand Dirt Devil F9 WASHABLE, REUSABLE Vacuum HEPA Filter Compare to Part #3DJ0360000, 2DJ0360000 Crucial Vacuum filters work while you vacuum, removing household dirt and dust to help improve indoor air quality Absolutely Essential for all Allergy Sufferers. Designed and Developed in the USA by Crucial Vacuum