【High-quality materials】Multi-style nozzle 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. 【Improve cooling performance】The portable window kit seals around your window, then zips around your hose that directs your ventilation to the outside. With this great idea, your room can be cooled in less time and the unit creates excellent cooling performance for you. 【Good Sealing Effect】The window seal dissipates the hot air in your room from 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, insects, mosquitoes, etc. Not into your cool room. Thus increasing the efficiency of the equipment. 【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 practical. The portable air conditioner kit integrates the foil into the window track and the clamp to achieve a good sealing effect, which can keep your room cool at all times, prevent air conditioning from leaking, prevent hot air from entering, and save electricity. 【Wide Application】All outlets have a diameter of 15cm for portable air conditioners and exhaust hoses. This connector is suitable for all portable air conditioners with a caliber of 15cm. Universal and lightweight, the air conditioner hose adapter works with all portable mobile air conditioners, air brakes/hot hoods and portable dryers and is compatible with most windows.