12 in. x 6 in. to 7 in. Tall Insulated Register Box Side Outlet - R4

The Master Flow 12 in. x 6 in. x 7 in. Tall Insulated Register Box with Side 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 7 in. round ducts. The height of the box is 9 in.