The Ameri-Vent 4EAL Adjustable Gas Vent is a steel gas vent elbow designed for a nominal duct diameter of 4 inches. It features an outside diameter of 4.5 inches, making it compatible with AMERI-VENT brand products. This gas vent elbow is silver in color and is made in Mexico. It does not come with a battery and does not have any specified bundle options. The Ameri-Vent 4EAL is a reliable heating equipment accessory for ventilation in gas vent pipe systems.