Master Flow 8 in. x 4 in. x 4 in. 90 Degree Register Box with Flange

The Master Flow 8 in. x 4 in. x 4 in. 90-Degree Register Box with Flange creates a right-angle transition from round pipe or insulated flexible duct to an air register. This box is made of galvanized steel. It can be installed with sheet metal screws. It is suitable for most HVAC applications.