【Material】The portable air conditioner window kit is made of durable PVC material, lightweight and portable, easy to install and remove, suitable for home or office use. 【Good Sealing】Insert the plate into the window track and tighten it to achieve a good sealing effect that keeps your room always cool, does not prevent air conditioner leakage, prevents hot air from inflating and saves energy. 【Sliding Window】This portable AC window vent kit comes with 4 panels. The veneer length is 43 cm and the combined extension length ranges from 43 to 140 cm. It is suitable for most vertical and horizontal sliding windows. Depending on the window size, combinations of 2, 3, or 4 pieces can be used. 【Durable】This AC fan kit is made of high-quality PVC material, which has better high-temperature resistance, can withstand long-term thermal airflow and summer sunlight, is resistant to aging, and can be used year after year. 【Easy Installation】: It is easy to install and remove without tools, saves