Model 84ST Ductboard Collar
- Material: Hot Dipped Galvanized Steel per ASTM A653 CS Type B
- 28 Gauge
- Available 4" thru 20"
- 2 3/4" Long from Ring to Edge of Collar
- Ring is 1" Wide
- Tabs are designed for 1", 1 1/2" and 2" Ductboard
- Also available with damper (84STWD)