SHARP-Air Purifier (FU-A28E) Plasmacluster technology with HEPA filter & Pre-FilterMesh ( Coverage: Up to 160 sq. ft. ) Sharp Air Purifier model FU-A28E-W is suitable for upto 200 sq ft area and is Certified by 28 Global Labs for Safety & Effectiveness. More than 7 crore users have reposed their trust in Sharp Air Purifier. It combines both ACTIVE & PASSIVE Purification for a holistic performance all through the year. Think beyond PM2.5, each season comes with variety of challenges, hence please buy an Air Purifier which can work even in other seasons.