A sheet metal elbow boot is a durable fitting used in HVAC systems to connect and redirect airflow between ductwork sections at different angles. Made from corrosion-resistant materials like galvanized steel or aluminum, the elbow boot features a curved elbow-shaped channel with flanges on both ends. These flanges provide a secure connection to other duct components while preventing air leakage. Available in various sizes, the sheet metal elbow boot is designed for efficient airflow and can be customized to fit specific requirements. Regular maintenance and inspection ensure its proper functioning, making it an essential component in HVAC installations.