Master Flow 12 in. x 6 in. Ductboard Insulated Register Box - R6

The Master Flow 12 in. x 6 in. Duct Board Insulated Register Box - R6 helps you connect round pipe or insulated flexible duct to a grill or air register with ease (pipe, duct, grill and air register not included). This box is pre-wrapped with R6 fiberglass insulation to offer you an easy installation and provide high thermal efficiency. This box is compatible with a variety of collar sizes for your convenience.

• Transition from pipe or insulated flex duct to register grille
• Durable galvanized steel construction
• R6 ductboard insulation, no need to wrap