Compliment your cleaning collection with the RYOBI Small Wet/Dry Foam Filters (2-Pack). These filters protect your wet/dry vacuum during water clean-ups. Install by removing the cartridge filter and placing the foam filter over the filter cage. For dry debris pick up, we recommend using the RYOBI Small Standard Filter (A32VC05) or RYOBI Small HEPA Filter (A32RF08). Replace your filters every 3 months for optimal vacuum performance. For best results, always pair your RYOBI tools with RYOBI accessories. This Small Wet/Dry HEPA Filter is compatible with the RYOBI 18V ONE+ 1 Gallon Wet/Dry Vacuum (PCL733), 18V ONE+ LINK 3 Gallon Wet/Dry Vacuum (PCL734), and 18V ONE+ 3 Gallon Wet/Dry Vacuum (P3240).