Filter - Hoover primary dust cup filter for Windtunnel I, III & air series upright vacuum

Hoover Washable Primary Dust Cup Filter for WindTunnel I, WindTunnel III, & Air Series Upright Vacuums Including Models UH70400, UH70401, UH70402, UH70403PC, UH70404, UH70405, UH70900, UH70901, UH70905, UH70909, UH70930, UH70935, UH70939, UH72400, UH72401, UH72409, UH72540, UH72540CDI, & UH72540DI