HEPA (High Efficiency Particulate Air) cabin air filter is built with high efficiency filtration media, which is designed for people who suffer from allergies. It has a 10-15% drop in pressure compared to a PUREFLOW Advanced filter and is recommended to be replaced at least twice a year.
PureFlow by Premium Guard with 4 Filtration Stages – First stage high efficiency PureFlow HEPA filtration media that captures microscopic particles.
Second and third stage activated carbon layer that block dangerous gases, eg carbon monoxide, sulfur dioxide. This layer is combined with baking soda to absorb bad odors.