1、Function Designed: The conditioner window adapter is designed to enable connections to exhaust hose and window kit plate. Practical and easy to use. 2、Enhance Cooling: After connecting the exhaust hose to the window with this connector, hot air from outside, insects, mosquitoes, etc. will not enter your cool room. 3、Easy To Install: No tools and No drilling required. Connects to the exhaust hose and can be easily installed on the back of a portable air conditioner. Simple and convenient. 4、Safety Plastic Material: Made of plastic material, the adapter is durable and won't scratch or damage the window. Non poisonous material is used for your health. 5、Widely Compatibility: With 150mm male thread and 130mm female thread, the connector is suitable for all portable air conditioners with caliber of 130mm and 150mm.