Two Hoover steamvac "dirty water tank" filters. Keep this filter clean and replace frequently to keep from sucking debris into your motor and insure adequate airflow for proper operation. 

These are some of the models this will fit. Not sure??? Give us a call. 260 244-4696

F5843-900, F5853-900, F5857-900, F5857-990 *, F5858-900, F5858-910, ***F5858-920, F5860-900, F5860-990 **, F5861-900, F5861-990 *, F5863-900, F5863-990, F5886-900, F5900-900