EnviroCare Hoover Windtunnel Pleated HEPA Vacuum Filter for Upright, Self propelled Vacuum Cleaners, 3613021, 43613-022, H-40120101, H-43613021, STR4265 (Pack of 3) Fits: Hoover Upright, Self propelled WindTunnel (3) Hoover WindTunnel Self Propelled HEPA Filter Fits original manufacture part numbers below: 40120101, 3613021, 43613-022, H-40120101, H-43613021, STR42651 Dimensions: 10 7/16" x 3 5/16" x EnviroCare Premium aftermarket Part #918