Improved hose extension: Use our connector to maximize the cooling capacity of your portable air conditioner. It creates additional working space for your air conditioning exhaust pipe and provides more space for your pipe to pass through the wall or window frame, thereby achieving higher efficiency. Easy installation: The air-conditioning hose connector can be easily screwed into place without professional tools to ensure a secure fit, reducing energy consumption. Wide application: Use our portable AC coupler to expand the installation options of your AC device. It is compatible with both clockwise and counterclockwise exhaust pipes, and offers two pipe sizes to choose from, adapting to 15 cm outer pipe and 13 cm inner pipe, increasing compatibility and performance. Safe connection: Ensures both ends are securely connected, effectively isolates hot air, and allows for quick discharge through the exhaust pipe, improving air conditioning efficiency. Color: White Material: Plastic Package Contents: 1 x Exhaust pipe connector (Only the above package content, other products are not included.) Note: Light reflection and different displays may cause slight color differences between the item in the picture and the actual product. Measurement allows an error of +/- 1-3cm.