The Master Flow 6 in. x 6 in. x 6 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 6 in. round pipe or insulated flexible duct to a 6 in. x 6 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)

Maximum temperature rating of 390 degree F， minimum temperature rating of 100 degree F