Imperial 26 Ga. 4 In. Galvanized Adjustable Elbow is a flexible and secure choice for ductwork connections. Featuring 90-degree adjustable rounded double seams, this elbow ensures that each section can turn ly without the risk of becoming disconnected, providing a reliable and secure connection. Its adjustable design allows you to set the elbows to any angle between a straight line and a right angle, giving you the flexibility to customize your ductwork layout according to your specific needs. Model Number: GV0284-C