With advanced 360-degree duct technology and air outlet design, M03 air purifiers for home can refresh the air once per hour in rooms as large as 1500ft² and 6X in a space of 300ft². Modern design fits in large rooms, bedroom, living room, office, school, nursery, etc.
You do need an air purifier! Unauthorized replacement filters are not tested or verified performance at HEPA standard. It's unreliable and may damage the air purifier. In order to thoroughly clean the air, I hope you can buy original filter. The Only Genuine Replacement Filter: B0CJY9NP7H.