The RIDGID Wet Debris Application Filter is designed for your RIDGID wet dry vacuum (5 gal. and larger) to use when picking up high volume liquids with debris. The replacement wet debris application filter can be washed and, if dried properly, reused. Changing shop vac filters often is strongly recommended to increase the vac's performance and to help extend wet dry vacuum life as it protects the motor from harmful debris. This product offers one foam filter with a structured core that fits all RIDGID wet dry shop vacs 5 gal. and larger and should only be used for wet pickups. With its patented Qwik Lock feature, the filter simply snaps on or off the shop vacuum for easy cleaning and to quickly switch filter options. RIDGID provides other filtration offerings, including the VF4000 General Debris Filter, the VF5000 Fine Dust Filter, the VF6000 HEPA Material Filter, and the VF8000 HEPA Filter, depending on the job application and type of cleanup mess.