2 Washable & Reusable Hoover WindTunnel Bagless Canister Filters; Compare to Part# 59134033 * Fits The Following Hoover Bagless Canisters: S3755, S3765, S3755045, S3765040 and S3755080 and more. * For Optimal Performance, Wash Every Six Months. Breathe the Difference! * Essential For Allergy Sufferers! * Designed and Developed in the USA by Crucial Vacuum