General description No more hot intrusive air! The Window Caulking Cloth for Portable Air Conditioners and Dryers effectively directs warm air from your portable air conditioner hose by locking it between the window frame and the window itself. This window seal prevents insects, mosquitoes, and rain from entering, creating a closed environment that helps keep your room cooler for longer. It enhances cooling performance by sealing the contours of your window, even when it is open, encircling the air duct of your air conditioner and blocking the return of hot air, making your mobile air conditioning unit more efficient and cooling your room faster. Additionally, it helps reduce energy consumption and carbon dioxide emissions, saving you money on electricity bills during the summer months. Technical specifications Maximum window perimeter: 400 CM Material: Waterproof insulation fabric High-quality zippers Adhesive tape sewn firmly to the insulation fabric Installation Apply duct tape to