Ionic Pro CA200T Twin Pack Compact Ionic Air Purifier with Bonus Car Ionizers Set of 2 ionic air purifiers for the home; each recommended for rooms up to 500 square feet Plastic and metal purifier construction with 3 steel particle collection blades; push-button operation Irritants and allergens like pollen, smoke, dust, and pet dander on three collection blades; requires no additional assembly Bonus 2 car ionizers refresh air in your car; 12-volt lighter sockets; swivels to allow perfect positioning Air purifier measures 18-1/2 by 7-1/2 by 6-1/2 inches; backed by a 1-year warranty.