Stoppers are manufactured using 28GA galvanized steel. 12″ diameter and up made from 26GA.
| Part Number | Description | UOM | Ctn.Qty |
| 4DT05 | (M) 5″ TTO DOUBLE | EA | 5 |
| 4DT06 | (M) 6″ TTO DOUBLE | EA | 2 |
Stoppers are manufactured using 28GA galvanized steel. 12″ diameter and up made from 26GA.
Beaded Duct is manufactured using galvanized steel.
Rectangular Dampers are manufactured using 28 gauge galvanized steel.