<p>Compatibility: This replacement filter set only compatible for Molekule Air Purifier, NOT compatible for Molekule Mini, Mini+, or Air Pro</p> <p>Advanced -Filter: Our replacement filter for Molekule Air uses Photo Electrochemical Oxidation () which effectively attach airborne pollutants for air quality improvement. Recommended replacement for average use: every 6 months</p> <p>True HEPA Filtration System: Used with H13 True HEPA layer and effectively attach 99.97% of airborne particles as small as 0.3microns, includes dust, smoke, pollen, pet hair and dander and etc</p> <p>Carbon Pre-Filter: Effectively attach larger particles like dust and dander, while slowing down VOCs on their way to the -Filter. Recommended replacement for average use: every 3 months</p> <p>2 in 1 High-efficiency Filter: To Keep your machine at optimal performance, please replace the filter regularly.</p> <p>(The printed words may be different, but it does not affect the use)</p> <p>Color: Grey</p> <p>Material: Cotton</p> <p>Package Contents:</p> <p>1 Pack * -Filter</p> <p>2 Pack * Pre-Filters</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>