"Item Specifications: FITS RIDGID 3 TO 4.5 GALLON VACUUMS: (WD3050, WD4070, WD4080, WD4522, 4000RV, 4500RV) Features: 100% Brand new and high quality. Easy installation and durable. Great for picking up cold fireplace ash, fine dust and everyday dirt Fully washable and reusable COLLECTS 99% OF PARTICLES that are at least 1/2 microns in size. Capture more particles thanks to the PLEATED DESIGN which greatens surface area WASHABLE AND REUSABLE! Easy cleanup. Just use water STURDY 3 LAYER MATERIAL: Perfect for collecting everyday dirt, drywall dust, cement dust, and sawdust! NO FILTER PLATE NEEDED! Enjoy easy installation Be careful : This is not a Ridgid OEM product. Any brand names or logos are the registered trademarks of their respective owners. Any use of any brand name or model designation for this product is made solely for purposes of demonstrating compatibility."