The RHEEM RTG20151GA 90 Degree Concentric Elbow is designed for efficient venting in gas systems. This elbow features a durable construction, ensuring long-lasting performance and reliability. With a size of 3 in./5 in., it is compatible with various RHEEM models, making it an essential component for installation and maintenance. The design allows for smooth airflow and meets industry standards for safety and efficiency. Ideal for both residential and commercial applications, this concentric elbow is vital for optimal system operation.