I-sensor system LG’s 16 stages Multi Layer Filtering System Allergen Filter Deodorization, Sterilization Touch Control Pad (Graphic LED) Quiet Operation: Noise Min 15dB; Max 46dB LG Electronics Air Purifier purifies air with a powerful 3 main filer system. Advanced Technology offers powerful filtration of indoor air with harmful substances.The air purifier has a coverage of up to 1400-1600 square feet. Its 17 stage main filter system contains a pre-filter, allergen filter, washable HEPA, W. Deodorization filter, and NPI sterilization. The NPI sterilization system emits the nano plasma ion which sterilizes over 99% of the suspended bacteria in the air. In addition, the platinum deodorization system removes harmful gases and VOCs from the air, leaving it clean and fresh. + Shipping (To be added shipping separately) Specifications: Type APCapacity 43 sq meterHepa Filter YesDeodorization YesFilter Stages 16NPI YesDesign Art CoolControl Type Touch Control(Graphic Led)Color Dark RedDimension: W x D x H (cms) 42.6x27x56.8Weight(Kg) 12