Coway Professional Air Purifier, Special Green Anti-Virus True HEPA Filter (Coway AirMega 150 (AP-1019C)): Amazon.in: Home & Kitchen
Amazon.com: Medify MA-25 Air Purifier with H13 HEPA filter - a higher grade of HEPA for 500 Sq. Ft. Air Purifier | Dual Air Intake | Two '3-in-1' Filters | 99.9% removal