HEPA filter with washable pre-filter, efficiency level of 99.97% at 0.3 micron, 360 degree filtration, best for pet dander and odours, indicator light glows red on your air purifier when the filter needs to be replaced, Use with Z-1000 Air Purifier. Breathe cleaner air with a filter that helps to eliminate common pet odours. This combination filter has 3 levels of filtration formulated specifically to combat pet odours and dander; such as hair, dust and dirt. The all-in-one filter system combines a washable prefilter, a true HEPA filter and a 2-layer carbon pellet filter. In addition to common household allergens and pollutants, this filter drum captures up to 99.97% of airborne pet odours, dander, pet hair and dust. Breathe cleaner air with a filter that helps eliminate pet hair and odours with 360 degree filtration drawing in air from all directions, collecting microscopic particles, pollen, dust, pet odour, pet hair, allergens and VOCs. The filter drum is at the core of purifying