Crucial Vacuum Hoover Air Model UH70400 HEPA Style Filter Cartridge Designed To Fit Hoover WindTunnel Air Model UH70400; Compare To Hoover Part # 303902001; Designed & Engineered EASY TO INSTALL so you can get back to cleaning as soon as possible! Simply remove your old filter and put this brand new one in it's place! Compare to Hoover Part No. 303902001. GUARANTEED SATISFACTION because of a 30 day full money bank guarantee and a trusted Crucial Vacuum warranty. We are so confident in our products that we have no problem giving you every penny back if you're unhappy with your purchase. You won't see promises like that from big box brands! HEALTHIER LIFESTYLE! No one wants breathe dirty air in their home and if you don't clean your air filter that will be exactly what you'll be doing! Replacing your filter will help clean your air purifier's air and allow for a healthier lifestyle! This filter helps keep our household dust, pollen and mold spores. HIGH QUALITY ALLERGEN AIR FILTER replaces your existing Hoover exhaust filter. Get back to having a clean air to breathe again! This filter fits Hoover WindTunnel Air Model UH70400 Vacuums. SAVE MONEY by using a new air filter! When your air purifier has a clogged or dirty air filter it can cause it to work harder which will end up hurting your electric bill!