Upgrade your heating system with the Intertherm Roof Jacks Flue Assembly. Designed for 51-inch installations with a 95-degree slant, this flue assembly is perfect for roofs with a 4/12 pitch. The model number 903666A ensures compatibility with various Intertherm units, providing a reliable venting solution. Crafted for durability and efficiency, it helps maintain optimal airflow while preventing leaks. Easy to install, this assembly is essential for ensuring your heating system operates safely and effectively. Don't compromise on quality—choose Intertherm for your flue needs!