Pre-Filter Filter Fits Hoover MultiCyclonic Canister Vacuum Cleaner by Crucial Vacuum * black foam filter assembly, along with the plastic round bracket the filter rests in. * Replaces Hoover Part # 304285001; Fits Hoover MultiCyclonic Canister Vacuum Cleaners, including models SH40040, SH40060 * Traps 99.97% of household airborne particles - Absolutely Essential for Allergy Sufferers! * Designed and Developed in the USA by Crucial Vacuum