Features: Wet/Dry Cartridge Filter Compatible with Craftsman Shop Vac 17816 9-17816 Vacuum Cleaner, fit Most 5 Gallon and Larger Vacs Made After 1988. Washable and reusable,it is great for cleanup of everyday dirt like sawdust, wood chips, job site debris and car or truck dirt. Long-lasting cartridge filter, it is recommended to replace the filter every 3-6 months according to your use. Pleated stucture design filter, provides more surface area to improve airflow & reduce clogging, effectively improve the air quality for your home. Easy to install and remove the filter. Note: Please ensure the filter is fit your vacuum cleaners model. Specification: Material: HEPA Color: show as pictures. Size: 6.5*6.5*8.5Inches/16.5*16.5*21.5CM.