Master Flow 12 in. x 12 in. to 10 in. Ceiling Register Box

Master Flow 10 in. x 8 in. to 6 in. Ceiling Register Box

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).