Master Flow 12 in. x 4 in. to 6 in. Universal Register Box with Flange

The Master Flow 12 in. x 4 in. x 6 in. Register Box with Flange features 30-gauge, galvanized-steel construction for strength and durability. This register box has a built-in flange that creates the ability to install before dry walling. The flange also provides an area for register screws, Sheetrock frame or nails for joists.

• Creates a straight, in-line transition to a register grille
• Durable galvanized steel construction
• Used in ceiling applications (snap-on rails sold seperately)