FITS 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, superfine dust, dirt, sawdust and more. A pleated design allows maximum collection of any unwanted material in your shop. This filter is also completely washable and reusable, needing only water. Improve your health and the look of your living or work area with this Wet/Dry Shop Vac Filter.