Traps any ultra-fine dust particles down to 0.3 microns (particles about 1/300th the diameter of a strand of hair) and keeps 99.97% dust inside the vac from entering the vac motor.
The ultra-fine filtration prevents vacuum motor failure caused by dust entering the motor.
Special nonstick membrane material on HEPA cartridge resists clogging and sheds dirt easily. For a thorough cleaning, just remove HEPA cartridge and rinse filter under a stream of water. Air dry before re-installing.
