The Delonghi TL2638 Portable Air Conditioner Stopper, a must-have accessory for optimizing the performance of your portable air conditioner. This stopper is designed to enhance the efficiency of your air conditioning unit by preventing air leakage and ensuring that the cool air stays inside your space. Say goodbye to energy wastage and hello to a more comfortable environment with this innovative stopper. Keep your room cool and refreshing without any unwanted air seepage. Upgrade your air conditioning setup with the Delonghi TL2638 Portable Air Conditioner Stopper and enjoy a more effective cooling experience.