Wet Dry Vacuum HEPA Filter Replacement Compatible 49-90-0160 and 49-90-1951 This high-efficiency HEPA filter is excellent and does not need to be changed every time after cleaning. NOT FIT 49-90-1900 and 0880-20 vacuum MAIN FEATURES: Compatible with Milwaukee 0882-20 (M18) Compact Vacuum Easy cleaning due to nylon pre-filter mesh Easy twist and lock installation Captures 99.97% of all particles greater than 0.3 microns INCLUDE: 2 HEPA filter with nylon mesh and 2 foam gaskets To clean the filter: This filter has a mesh cover that makes it an easier filter to clean, so there is no need to use a brush to clean every crease. Gently tap the filter against the side of the bin and most of the debris will fall off easily. New life for an old filter (lifehack) Over time, the mesh can become clogged with fine dust and it will be difficult to clean. Just pry the mesh with your fingernail and remove. So you get a practically new and clean filter.