【Efficient Airflow Design】: Portable Air Conditioner Exhaust Hose Adapter features a flat-mouth structure to guide hot air out smoothly, enhancing cooling efficiency and improving indoor temperature regulation. 【Wide Application Application】: Suitable for 130mm and 150mm diameter exhaust hoses, making it a widly use method for various mobile air conditioning units and window vent systems. 【Sturdy PE Construction】: Crafted from sturdy PE material, this connector remains stable under high heat without softening, yellowing, or cracking, ensuring long-term reliability. 【Smooth Internal Surface】: The internal design avoids bumps to ensure airflow is not blocked. Smooth rounded edges protect your hoses and window seal kits from scratches while maintaining a stable connection. 【Quick Tool-Free Installation】: Designed for simple use, this adapter allows you to quickly connect your exhaust hose to window panels without the need for professional tools., Manufacturer: BDKMMS