Uses the Qwik-Lock Filter Fastening System making removing and installing the wet dry vacuum filter quick, easy and secure. Multi-Fit wet dry vac filter with material that captures everyday dirt such as sawdust and typical dirt. The pleated filter design on the wet dry vacuum filter allows the filter to have more surface area to improving airflow and reduce clogging compared to sleeves and bags. Multi-Fit wet vac filter material is washable allowing for a better clean, and thus better wet dry vac filter performance Replace your wet dry vacuum cleaner filter at least twice a year for optimal shop vacuum cleaner performance