The Master Flow 14 in. x 6 in. x 8 in. Tall Insulated Register Box with End Outlet is lined with duct liner giving the box an R-Value of 4. It 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 installation. The insulation also serves as a noise deadener and helps control condensation. It is designed for 8 in. round ducts. This 30 gauge register box with flange is made of zinc-coated galvanized steel.
- Made of zinc-coated galvanized steel
- Designed for 8 in. ducts
- 30 gauge
- R value 4