Hoover Air Sprint Series UH-72420 Upright Vacuum Primary Filter Part # 440004493 Hoover Air Sprint Series UH-72420 Upright Vacuum Cleaner Primary Filter Genuine Part # 440004493. Fits Models : UH72420, UH72430, UH72420CA, UH72430FDI, UH72430RM, UH72421CDI, UH72422PC, UH72425.