This Master Flow 12 in. x 4 in. Register Box Saddle fits over a section of round pipe to provide a transition to a grille or air register. It can be cut down for your convenience. Creates a horizontal transition from round pipe to an air register or grille.
Creates a horizontal transition from round pipe to an air register or grille
Installs with sheet metal screws
Designed to fit over a section of round pipe
Easily cuts down if necessary
Insulate ductwork for system efficiency and comfort
Seal seams with code-approved mastic， sealant or duct tape (not included)
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