The 3M Electrostatic Air Conditioner Filter White effectively captures 83% PM2.5 micro-particles in just one hour. It comes with an electrostatically charged filter to effectively capture large airborne pollutants and particles carrying odours and bacteria for cleaner, fresher air. This high-technology air purifier is compatible with most wall-mounted air conditioner models. It traps tiny dust and dirt particles from exhaust, smoke, and smog and helps maintain sufficient airflow.-White-Size (19.05x28.19x0.76)