Shiner Manufacturing

G.I. Ducting Rings (Galvanized Iron Ducting Rings) are circular or spiral support components used in ductwork systems—especially for round or spiral ducts—to provide structural support, maintain shape, and assist in joining duct sections together.

They’re essential in HVAC (Heating, Ventilation, and Air Conditioning) systems where round ducting is used for efficient airflow with reduced pressure loss.