The Master Flow 12 in. x 8 in. x 8 in. Register Box with Flange is designed for 8 in. round ducts. This 30 gauge register box with flange is made of zinc-coated galvanized steel. The maximum temperature rating is up to 390°F and the minimum temperature rating is as low as -100°F.
- Made of zinc-coated galvanized steel
- Designed for 8 in. ducts
- 30 gauge
- Seal seams with code-approved mastic, sealant or duct tape (sold separately)