WT-3001 sector filter can be supplied with any filter material. Our stainless steel mesh performs in all processes and provides improved mat release and cleaning characteristics. Synthetic meshes with similar open area only allow half of the flow as stainless when new. Synthetics need to be changed every 18-24 months maintain their efficiency, while stainless steel maintains it's superior flow characteristics for 5+ years with properly operating showers. This drastically lowers operating costs from reduced maintenance and maximum productive run time.