The Clarifion 3-Pack GL-139 Filterless Air Ionizers are designed for home negative ion filtration, providing clean air with a Clean Air Delivery Rating (CADR) of 101-150. These plug-in units have a sleek white glossy finish and are made of plastic, weighing 1.27 pounds each. They feature an odor sensor and dust sensor for efficient filtration, capturing contaminants like cooking oil smoke, allergens, and bacteria. With one speed setting and filterless design, these ionizers are easy to operate using push-button or touch control. Perfect for any room in the home, these air purifiers are also compatible with smart home systems like ADT Pulse and offer coverage up to 150 square feet.