The RYOBI PWV200 Replacement Filter will keep your 18-Vot ONE+ 4.75 Gal. Wet/Dry Vac working like new. This filter is simple to install and is designed with an easy to clean material. This filter helps protect the vacuum motor from debris for longer tool life. For best results, always pair your RYOBI tools with RYOBI accessories. The A32RF03N includes (1) PWV200 Replacement Filter and (1) Filter Cap.