Master Flow 10 in. x 4 in. to 5 in. Universal Register Box

The Master Flow 10 in. x 4 in. x 5 in. Universal Register Box is made of galvanized steel. It creates a straight (in-line) transition from round pipe or insulated flexible duct to an air register or grille. The universal register box can be installed with sheet metal screws. It is suitable for most HVAC applications.

• Creates a straight, in-line transition to a register grille
• Durable galvanized steel construction
• Connect to round pipe or insulated flex duct