“Is this the same as the 211+ but just smaller? I have the 211+ and want a smaller one for another bedroom but want the same effectiveness as the 211+ model.”

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• The Blue Pure 411 uses the same technology and the same filter medium as the larger 211+ unit does. It will just as effective, but it is made for a smaller recommended square footage.

  Answered by Blueair Support Team 5 years ago

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• I use the Blue Pure 411 for my bedroom since it is smaller than the Blue Pure 211 plus. The 411 is round whereas the 211 plus is square and approximately twice the size of the 411.

  Answered by Catalina 5 years ago

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