Pacvac's patented, snorkel-like HEPA rated filter allows consistent airflow through the vacuum cleaner as the dust bag fills, keeping the motor cooler and maintaining higher levels of suction for longer. It is easy to remove and replace with the simplistic twist to lock in place design. Pacvac recommends cleaning this filter regularly by simply removing it from the machine and tapping it gently to dislodge any dust. Utilising this filter is essential in ensuring high quality filtration and prolonging the life of the motor