Master Flow 10 in. x 4 in. to 6 in. Universal Register Box

This Master Flow 10 in. x 4 in. to 6 in. Universal Register Box creates a straight (in-line) transition from round pipe or insulated flexible duct to an air register or grille. It can be installed with sheet metal screws. It is suitable for most HVAC applications. This universal register box is made of galvanized steel.|Galvanized steel construction|Creates a straight, in-line transition from an insulated flexible duct or round pipe to an air register or grille|Installs with sheet-metal screws|Insulate ductwork for system efficiency and comfort|Seal seams with code-approved mastic, sealant or duct tape (not included)