Master Flow 10 in. x 4 in. Register Box Saddle

This Master Flow 10 in. x 4 in. Register Box Saddle allows you to cut an opening of the appropriate size into the branch line and secures the saddle over the hole. Installs with sheet metal screws (not included). Seal and insulate ductwork for system efficiency and comfort.

• Creates a horizontal transition from pipe to register grille
• Durable galvanized steel construction
• Saddle style