High-quality materials: The air conditioning adapter is made of polypropylene material, durable and will not scratch or damage windows. Non-toxic materials for your health. Lightweight and strong, durable and flexible, and can be used for a long time Good Sealing Effect: The window seal dissipates hot air from your room through the hose of your portable air conditioner unit by locking the hose between the window frame and the window sash. Use this connector to connect the exhaust hose to the window after the hot air from outside, which can keep your room cool at all times, prevent air conditioning from leaking, save electricity. Easy to install: No tools required, no holes to drill. Connected to the exhaust hose, it can be easily installed on the back of a portable air conditioner. Simple and convenient Practical Accessory: The air conditioner exhaust hose connector is a practical and useful tool accessory to extend your air conditioner hose, suitable for passing the AC exhaust