Heller Replacement Set True HEPA/Carbon Filter for HAP60 Air Purifier Filter size: 21 x 12 x 3.8 cm The primary filter will pick up large particles like lint, pet hair & fluff. True HEPA air filter removes up to 99.97% of airborne pollens, mould spores, dust mites, smoke, bacteria and household dust, thereby minimizing the risk of allergies. The activated carbon filter layer will reduce household odours caused by pets, cooking, garbage and the use of household chemicals.