Universal Filter Screen for Portable Air Conditioner Exhaust Key benefits Universal compatibility: designed to fit all compact air conditioners and exhaust hoses with a diameter of 13 cm or 15 cm, enabling use with a wide range of devices. Insect and dust protection: equipped with an insect net and dust filter to block particles and prevent ingress, helping maintain clean and fresh airflow. Easy installation: attaches directly to the exhaust hose interface of your mobile air conditioner with no extra tools required, providing a secure and tight fit. Improved airflow and efficiency: the filter screen design minimizes air resistance, helping maximize the efficiency of your portable air conditioner and optimize cooling performance. What it is and how it works This is a universal filter screen with an integrated insect net and dust protection. It is compatible with compact air conditioners and exhaust hoses that are 13 cm or 15 cm in diameter, making it suitable for a wide range of devices. The filter screen blocks dust and insects from entering the unit while allowing air to pass through efficiently, supporting cleaner operation and consistent airflow. Installation and compatibility No tools are needed. Simply attach the adapter to the exhaust hose interface of your mobile air conditioner for a secure, tight fit. Works with exhaust hoses that are 13 cm or 15 cm in diameter, and is suitable for most compact air conditioners and related devices. Use scenarios Home and apartment use: install on your portable AC exhaust to protect internal components from dust and insects while maintaining strong airflow for reliable cooling. Office or dorm room cooling: compatible with common 13 cm or 15 cm exhaust setups, helping keep air clean without compromising performance. Travel and mobile setups (RVs, caravans): attach to the exhaust hose to reduce dust entry and insect ingress in environments where dust is more likely, while preserving cooling efficiency.