VF3500 3-Layer Wet/Dry Vacuum Filter for RIDGID WD4050 3 to 4.5 Gallon Vacuums - - Amazon.com
Clean-Link V Bank Compact Filter Rigid Filter V-Cell Filter 4V Plastic Frame 24*24*12 F6 F8 F9 65% 85% 95% V Type Box Medium Air Filter - China Combined HEPA Filter and Air Filter
RIDGID 1-Layer Standard Pleated Paper Filter for Most 5 Gallon and Larger RIDGID Wet/Dry Shop Vacuums (2-Pack) VF4200 - The Home Depot
V-Pack Rigid Filter, Cassette Filters, V-Bank HEPA Filters - China V-Pack Filter and Rigid Filter