HEPA Filter for Hoover Vacuum Cleaner 40120101 43613021 with Frame Quantity: 1 (One) Filters Product:Final Exhaust HEPA Filter for Hoover Upright Vacuums Details:Fits Hoover Windtunnel uprights with power drive with the HOOVER Advanced Filtration System. This is a HEPA final filter with frame and gasket. Replaces Hoover part numbers 40120101 43613021 38230402.