Dirty water tank FILTER for "POWERSCRUB 50/SteamVac 50 series carpet cleaners. This black mess sleeve fits on the clean air intake area of the dirty water tanks lid. In place it prevents foam and material from being sucked into the motor. Designed to be cleaned after each use it does wear out with enough use. Replacement is a simple slide old one off and slide a new one on. For models in the series FH50130, FH50140, FH50145, FH50150 thru FH50153. OEM: Hoover/China 03.11.23 dda