Master Flow 10 in. x 4 in. to 6 in. Register Box with Flange

The Master Flow 10 in. x 4 in. x 6 in. Register Box with Flange is designed for 6 in. round ducts. This 30-Gauge register box with flange is made of zinc-coated galvanized steel. The maximum temperature rating is up to 390 degree F and the minimum temperature rating is as low as 100 degree F.

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