ThermoFlo Elbow 

ThermoFlo Elbow is a radius forming brace for flexible ducts that engineered to improve the airflow and efficiency on your grow room ventilation system. It saves energy by eliminating kinks and airflow restrictions and shapes flexible duct into efficient 90 degree elbows.

Made from 100% recycled materials, it works with all types of flexible ducting. Thermoflo Elbow is perfect for any indoor garden operation and is easy to use. Install on new ducting or use to retrofit existing flexible ducts.