Master Flow 10 in. x 10 in. to 8 in. Ceiling Register Box

The Master Flow 10 in. x 10 in. x 8 in. Ceiling Register Box is made of 30-Gauge, zinc-coated, galvanized steel. It is designed for a transition from round pipe or insulated flexible duct to an air register or grille. It can be installed with sheet metal screws (not included).