1. Easy Installation: Designed for convenience, this window seal is simple to attach around your open window. Adjust the tension cord around the nozzle of your hose to block the backflow of warm air, making your air conditioner more efficient and cooling your room faster. 2. Universal Compatibility: The 200cm/300cm window seal is suitable for air conditioners, dryers, exhaust dryers, and dehumidifiers. It works with hung skylights, sliding casement windows, and inwardopening casement windows to create a better cooling environment. 3. EnergyEfficient Design: This window seal ensures your space stays cool by preventing hot air from reentering, allowing your air conditioner to work more effectively. The result is faster cooling and potentially lower energy costs during hot summer months. 4. Quality Construction: Made from polyester material in clean white, this window seal is built to withstand repeated use throughout the summer season. The adjustable tension cord provides a secure fit for various window openings.