The Rheem RK013083 45 Degree Elbow is designed for concentric venting applications, providing a reliable solution for your heating system. This durable elbow fitting allows for smooth directional changes in venting, ensuring efficient exhaust and air intake. Made from high-quality materials, it is built to withstand high temperatures and harsh conditions. Its compact design makes it suitable for various Rheem models, ensuring safe and effective venting in tight spaces. Enhance your heating system's performance with this reliable 45-degree elbow.