Description
Galvanized steel round storm duct starting collar. Used to transition from a flat surface made of metal or duct board to round pipe or insulated duct. Designed with long tabs to fit most R 6.0 value duct board thicknesses through 1-1/2-in. Galvanized steel construction.
Technical specifications
Component :Galvanized steel
Width :4-in
Gauge :30
Warranty :1-year limited



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