This 4 drafthood is designed for use with models 75-76-AS-R-6 and 100-83-AS, ensuring proper ventilation and exhaust management. Manufactured by Hot Water Products LLC, it features a robust construction that withstands high temperatures and environmental conditions. The drafthood is essential for maintaining system efficiency and safety, preventing backdrafts and ensuring optimal airflow. Its design allows for easy installation and compatibility with various heating systems, making it a reliable choice for effective exhaust management.