ขึ้นอยู่กับประเภทของไส้กรองและการใช้งาน โดยปกติ Having Said that, I do not essentially think these are authentic deal breakers. For anyone who is just right after a robust air purifier that can certainly deal with any House, the Blueair Blue Pure 211+ is a good Over-all pick for every day use. Check out the waiting for link from Social Network Posts (28)