Crushproof Tubing Door Port is an aluminum adapter designed to create a secure exhaust hose passage through 1-inch thick doors, enabling safe and effective fume extraction in enclosed spaces. This durable door port facilitates airflow by allowing hoses to connect through doors, preserving workspace air quality and safety. Made in the USA, it combines high heat resistance and corrosion durability, making it a reliable choice for automotive shops, industrial settings, and other environments requiring efficient exhaust management solutions.