The Delonghi NE2591 Portable Air Conditioner Air Filter, designed to enhance the performance and longevity of your air conditioning unit. This high-quality air filter is specifically crafted by Delonghi to ensure optimal air filtration, capturing dust, pollen, and other airborne particles to maintain clean and fresh indoor air quality. The Delonghi NE2591 air filter is a perfect fit for your portable air conditioner, providing efficient filtration to keep your space comfortable and healthy. Replace your old filter with the Delonghi NE2591 for improved air circulation and a cleaner environment.