The Master Flow 26-Gauge 90-Degree Adjustable Elbow is designed to create angular or gradual turns in HVAC duct systems, providing efficient venting for boilers, furnaces, and hot water heaters where allowed by code. Made from durable 26-gauge galvanized steel, this elbow is built to withstand high temperatures and airflow demands. It is fully adjustable up to 90 degrees, allowing for precise angle customization. The crimped end ensures an easy, secure fit into pipes or other fittings of the same diameter, making installation quick and hassle-free.