Air Oasis MBL175WNGFU Mobile Sanifier 175 Sq Ft Coverage (Pearl White) 5 technologies in 1- Nano AHPCO (advanced hydrated photo catalytic oxidation) technology, germicidal UV light, washable stainless steel filter, and Ion generator Low maintenance- virtually maintenance free for 1 year Whisper quiet operation- no distracting noises Effectively reduce contaminants and eliminate odors