HEPA Filter - DefendAir HEPA 500 
 
HEPA filters are 99.7% effective at removing particulate down to 0.3 microns. This level of efficiency allows the filter to easily remove potentially harmful particulates generated by air movement and other disruptive construction activities on water restoration, building and maintenance, etc.
 
To maximise primary HEPA filter life, be sure to change the pre-filters regularly. DO NOT clean and re-use the HEPA filter.