Upgrade your air quality with the Delonghi NE1739 portable air conditioner air filter. This essential component ensures that your portable air conditioner functions at its best by trapping dust, pollen, and other airborne particles. By regularly replacing the air filter, you can maintain optimal performance and efficiency in your cooling unit. Keep your indoor air clean and fresh with this genuine Delonghi NE1739 air filter, designed to fit perfectly and provide superior filtration. Breathe easy and enjoy a healthier environment with this high-quality air filter for your portable air conditioner.