Refurbished Needs new filter 35 at Amazon for the filter. Other than that works great.
For Large Rooms, Cleans 3,048 Sqft In One Hour,

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LET’S CLEAR THE AIR QUIETER: Quiet Mark certified (23-53dB); Cleans up to 3,048 sqft space in 60 min,1,524sqft in 30min or 635sqft in about 12.5min on high
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