Alen BreatheSmart 75i Air Purifier- Certified RefurbishedAlen Certified Refurbished. Our refurbished units are often never previously operated and include our same as new Forever Guarantee. We meticulously inspect and certify each one for pure air production. We include a brand new front panel, filter, and new package. Alen BreatheSmart 75i Customized to fit your lifestyle. BreatheSmart 75i is designed to effectively purify your air in large and open living room up to 1,300 sq ft leaving you fresh, pure air