Improved hose extension: Use our connector to maximize the cooling capacity of your portable air conditioner. It creates more working space for your air conditioning exhaust pipe and provides more space for your pipe to pass through the wall or window frame, thus achieving the highest efficiency. Easy installation: The air-conditioning hose connector can be easily screwed in place without professional tools to a close fit, thus reducing energy consumption. Wide application: Use our portable AC coupler to expand the installation possibility of your AC device. It is perfectly matched with clockwise and counterclockwise exhaust pipes, and there are two pipe sizes to choose from, so as to adapt to 15 cm outer pipe and 13 cm inner pipe, which increases compatibility and improves . Safe connection: that the two ends are firmly connected, effectively isolate and quickly discharge hot air through the exhaust pipe, and improve the efficiency of air conditioning. Colour:White Material:plastic Package Contents: 1 x Exhaust pipe connector