Designed for RIDGID VF4000 Wet or Dry Vacuum. Fits for vacs 5-20 gallons , and fits for Husky vacs 6 to 9 gallons. VF4000 replacement filter: Designed for Ridgid VF4000 vacuum cleaner, compatible with Ridgid 5 to 20 gallon vacuums and Husky 6 to 9 gallon vacuums. Ideal Replacement Filter: The filter adopts pleated paper structure design, resists clogging, efficiently capture daily dust and particles, help improve air quality. Washable & Reusable: This filter meet high standard F class filtration, which is washable and reusable. It is recommended to replace the filter regularly according to your usage. Application: Compatible with Ridgid vacuum, includes WD5500, WD0671, WD6425, WD0970, WD7000, WD1270, WD1280, WD1450, WD1851, WD1680, WD1956, 6000RV, 1000RV, 1200RV, 1250RV, 3410RV, RV2400A, 1400RV, RV2400HF, RV2600B, 1650RV, 1620RV, 1610RV. Easy to Install: Perfectly matched stucture makes the filter easy to be installed, just simply remove your previous filter and then put this new one in it's place. Please ensure the filter is compatible with your vacuum cleaners model.