Duct Increasers are manufactured using standard or 26 gauge galvanized steel.
| Part Number | Description | UOM | Ctn.Qty |
| 4DT05 | (M) 5″ TTO DOUBLE | EA | 5 |
| 4DT06 | (M) 6″ TTO DOUBLE | EA | 2 |
Duct Increasers are manufactured using standard or 26 gauge galvanized steel.
Connects pipe of different diameters where air flows from larger into smaller diameter pipe.
Universal Boots are manufactured with standard gauge galvanized steel.
Round to Oval Straight Boots are manufactured with 30 gauge galvanized steel.