Master Flow 8 in. x 4 in. x 5 in. End Register Box with Flange

This Master Flow 8 in. x 4 in. x 5 in. End Register Box with Flange is ideal for when the opening in your floor is parallel to the floor joists and header. It allows you need to create a right-angle, center-end transition between your system run and an air register.

• Creates center-end transiton to register grille
• Durable galvanized steel construction
• Built in flange