Sharp FP-P40CX Plasmacluster Air Purifier Air purifier with Plasmacluster technology and HEPA filter Clean mode emits positive and negative ions to deactivate impurities For rooms up to 253 square feet; carbon filter helps remove odors Special pollen mode; 4 speeds; timer; convenient remote control Measures 7-7/8 by 16-1/3 by 22-4/9 inches; 1-year limited warranty