WORKSHOP Wet Dry Vacuum Filter WS15050F HEPA Media Filter For WS0500ASH Ash Vacuum HEPA media captures ash and other fine particles. This material captures particles down to 0.3 microns at 99.97% efficiency The pleated cartridge filter design on this HEPA media filter allows a filter to have more surface area in a confined space to improve airflow and reduce clogging. Use with WS0500ASH ash vacuum cleaner to collect ashes and fine debris under 122F (50C) Filter material is coated to make cleaning the filter fast and easy Replace your ash vacuum cleaner filter often to keep your vacuum cleaner functioning at its best