Product description Triples the work to purify the air This genuine Levoit LV-H132 air purifier replacement filter uses a three-stage filtration system including fine preliminary, true HEPA and activated carbon filter to remove 99.97% dust, allergens, bacteria and odours. Easy, efficient and refreshing. The control panel is intuitive and it is even easy to set up. Simply turn off the filter cover. Remove the old filter and pre-filter. Clean the remaining dust or hair inside the air purifier with a vacuum hose Insert the new filter (after removing it from its packaging). Make sure the tabs are facing outwards. Secure the lid until the arrows on both sides are aligned. Replace the filter every 6 months to optimise its work To do its best work, it has been recommended by the Levoit air purifier to change the filter every six months after accumulating odours, particles, allergens, mould spores, and so on. Box contents: 1 x pre-filter. Includes 1 x HEPA and activated carbon filter.