The Master Flow 12 in. x 6 in. x 8 in. Insulated Register Box with Flange provides a transition from round pipe or insulated flexible duct to air register or grill. It is insulated so there is no need to wrap after installations. The insulation also serves as a noise deadener and helps control condensation. It is designed for 8 in. round ducts. The built in flange can be used with Snap on Rails to make installation easier.
- Made of zinc-coated galvanized steel
- Designed for 8 in. ducts
- 30 gauge
- R-Value 6.0