Items 1 to 21 of 47 total Price Low to High Price High to Low Items 1 to 21 of 47 total Price High to LowAir Purifiers with Plasmacluster Recommended Room Size up to 120sq.ft (approx. 10’ x 12’)Dual Stage Filtration System - HEPA, Pre-Filter3 Fan Speeds (High/Med/Low)Library Quiet™ - as low as 28dB)1Long Life HEPA Filter (up to 2 years)2 Recommended Room Size up to 200sq.ft (approx. 12’ x 17’)Triple Stage Filtration System - HEPA, Active Carbon, Pre-Filter3 Fan Speeds (High/Med/Low)Library Quiet™ - as low as 28dB)1Long Life HEPA Filter (up to 2 years)2 Air Purifiers with Plasmacluster and Built-in Humidifier Plasmacluster® Air Purifier for rooms up to 254 sq. ft.Humidifying Function: 1.3 pints per hourTemperature/Humidity sensors detect and adjust humidity.True HEPA Filter traps 99.97% of particlesCADR for Dust/Smoke/Pollen: 164/164/174 PlasmaclusterTM Air Purifier for rooms up to 341 sq. ft.Humidifying Function: 1.5 pints per hourTrue HEPA Filter traps 99.97% of particlesTemperature/Humidity sensors detect and adjust humidity.