[High-Quality Material]: Our air conditioner coupler is made of premium ABS material, safe and environmental protection, durable and saves money, and light and strong. You can use it with confidence and it can be used for a long time. [Easy to Use]: The portable air conditioner exhaust coupler is used to connect the exhaust hose, no tools and no drilling are required. It is simple and convenient to connect to the exhaust hose and can be easily installed on the back of a portable air conditioner. [Improved Cooling Efficiency]: This adapter can attach the exhaust hose tightly to your air conditioning unit which helps to quickly exhaust indoor heat. So in summer or winter, it can cool down or warm up your room more efficiently in a shorter time. [Fits All 13cm Hoses]: Exhaust connectors can be installed on the back of many portable air conditioning units. It goes around with a diameter of 13cm, fits down to a 5" diameter exhaust hose, and can fit both clockwise and counterclockwise hoses. [Package Includes]: 1 x Exhaust Hose Adapter for Portable Air Conditioner Units. The adapter can be used with the hose and window kit of the portable air conditioner. It is a must-have item for your room, just own it and enjoy the convenience it brings!