AROVEC Apex300 Allergy Replacement Filter[AROVEC Apex300 Air Purifier Filter] Highly recommended to use original AROVEC replacement filter (Apex 300 RF) to keep your Apex300 air purifier at its best working efficiency and capacity, breath clean & fresh air all the time [Easy Replacement Filter] The filter is easy to be replaced and disposed of without any tool required, you can replace the filter in a few minutes. [Satisfaction] Filters are sealed to protect their lifetime quality. Please