The Master Flow 12 in. x 12 in. to 10 in. Ceiling Register Box features a 30-gauge， galvanized-steel construction to provide strength and durability. This ceiling register box creates a transition from round pipe or insulated flexible duct to an air register or grille. It can be installed with sheet-metal screws.
30-gauge， galvanized-steel construction for strength and durability
Creates a transition from 10 in. round pipe or insulated flexible duct to a 12 in. x 12 in. air register or grille
Use sheet-metal screws for a proper installation (not included)
Always seal seams with code-approved mastic， sealant or duct tape (not included)
Always insulate ductwork for greater system efficiency and comfort (insulation not included)
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