RIDGID 4 Gallon 5.0-Peak HP Portable Wet/Dry Shop Vacuum with Fine Dust Filter, Hose and Accessories WD4070 - The Home Depot
RIDGID 1-Layer Standard Pleated Paper Filter for Most 5 Gal. and Larger RIDGID Wet/Dry Shop Vacuums VF4000 - The Home Depot
A Great Shop Vacuum (or Wet Dry Vac) | Reviews by Wirecutter
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Amazon.com: RIDGID VF4000 Filter 1 Layer Wet Dry 5-20 Gal & 6-9 Gal Husky Vacuum : Industrial & Scientific
RIDGID 3-Layer Fine Dust Pleated Paper Filter for Most 5 Gal. and Larger Wet/Dry Shop Vacuums (4-Pack) VF5200A - The Home Depot
Amazon.com: Housmile VF4000 Shop Vac Filters for Ridgid Shop Vac Compatible with Ridgid Standard Wet/dry Vacuum 5 to 20 Gallon and Fits Husky Vacs 6 to 9 Gallon, 1 Pack : Tools & Home Improvement