Compatible connector design This exhaust duct interface is specially designed for Haier portable air conditioner hose, providing a secure and tight connection between your exhaust hose and casement kit plate for efficient air venting. Multiple size options Available in two diameter sizes (15 cm / 5.9 inch or 13 cm / 5.1 inch) with various interface types including flat interface and round head designs to meet different connection needs for your portable air conditioning system. quality construction Made from grade PP material that offers heat resistance and long lasting performance, this connector withstands continuous use during hot summer months without warping or deterioration. Easy installation process The simple plugandconnect design requires no tools or special skills, allowing you to quickly set up your portable air conditioner exhaust system in minutes, making home cooling more convenient. Use scenarios Window installation with a casement kit: Connects securely to the Haier portable AC hose and casement kit plate to achieve efficient venting in typical window setups. Flexible sizing for different openings: Choose the 15 cm or 13 cm diameter based on your window opening or hose end, and select flat interface or round head designs to fit your layout. Regular summer use: Rely on the durable PP construction for reliable performance during extended cooling periods without warp or deterioration.