Makita HEPA Filters are designed to work with the Makita 12 Gallon Wet/Dry Vacuum model VC4710 to meet the EPA (RRP) rule for HEPA vacuums. Each filter comes with its own certificate of efficiency confirming it is rated at 99.995% - 99.999% efficient down to 0.3 microns. A pair of filters is included to replace the standard filters that come with the vacuum.