【High-Quality Materials】Multi-style nozzle: The air conditioner adapter is made of polypropylene, a durable material that will not scratch or damage windows. Made from non-toxic materials, it is lightweight, strong, durable, and flexible, ensuring long-lasting use. 【Improved Cooling Performance】The portable window kit seals around your window and then contracts around your hose, directing your airflow outwards. This clever design allows your room to cool down faster, providing excellent cooling performance. 【Good Sealing Effect】The window seal directs hot air from your room via the hose from your portable air conditioning unit by locking the hose between the window frame and the window sash. Use this connector to connect the exhaust hose to the window, preventing hot air, insects, mosquitoes, etc., from entering your cool room. This increases the unit's efficiency. 【Easy to Install】No tools required, no drilling needed. Connected to the exhaust hose, it can be easily installed on the back of a portable air conditioner. Simple and convenient. The portable air conditioning kit integrates the plate into the window groove and the clamp to achieve a good sealing effect, which can keep your room cool at all times, prevent the air conditioner from leaking, keep hot air out, and save electricity. 【Wide Application】All outlets have a diameter of 15 cm for portable air conditioners and exhaust hoses. This connector is suitable for all portable air conditioners with a diameter of 15 cm. Universal and lightweight, the air conditioner hose adapter works with all portable air conditioners, air brakes/hot hoods, and portable clothes dryers and is compatible with most windows.