LeakProof Connection System: Threestep, tool assembly provides a dependable seal with portable AC hoses, enabling simple installation and reducing the risk of leaks. Broad Compatibility and Easy Integration: Designed to fit standard portable AC hoses and connect smoothly across multiple devices, supporting a variety of exhaust configurations for efficient performance. Enhanced Airflow Efficiency: Flowguiding design minimizes resistance, enabling rapid exhaust discharge and stable temperature control for improved comfort. Durable Density OnePiece Construction: Made from density material, molded in a single piece for deformation resistance, durability, and longlasting stability under pressure and wear. Practical Attributes: Functions reliably with portable AC hoses, uses a robust onepiece mold for longevity, and delivers steady exhaust performance with compatible sizing for standard setups. Use scenarios Home use with a portable air conditioner: connect the hose to a window vent kit for effective exterior exhaust and consistent cooling. Small workshop or temporary ducting: run a portable AC through a ducted setup to vent heat outside, using the coupler for quick, secure connections. Recreational vehicle or camping setup: pair with portable AC hoses to vent heat outside through a window or dedicated vent opening, ensuring efficient cooling on the go.