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Ducting ThermoFlo Elbow Universal Size

ThermoFlo Elbow is a radius forming brace for flexible ducts that?s engineered to improve airflow and HVAC system efficiency. It saves energy by eliminating kinks and airflow restrictions and shapes flexible ducts into efficient 90-degree elbows. Made from 100% recycled materials, ThermoFlo Elbow works with all kinds of flexible ducting and is U.L. approved. It?s easy to use and can be installed on new ducting, or used to retrofit existing flexible ducts.