Ximoon filter replace RIDGID VF3500 3-Layer Wet/Dry Vacuum Dust Filter for RIDGID WD4050 3 to 4.5 Gallon VacuumsFITS 3 TO 4. 5 GALLON VACUUMS: (WD3050, WD4070, WD4080, WD4522, 4000RV, 4500RV) You need to keep your workshop and home clean. Avoiding small particles like dust and dirt is key to maintaining your health. Capture these pesky particulates by using this Genuine Replacement Filter! It will fit any 3 4. 5 gallon Portable Wet Dry Vacuum. With the 3 layer design, this filter picks up 99% of material that is 1 2 micron or larger, making it perfect for ash,