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Best Seller | Master Flow 10 in. x 4 in. to 6 in. 90-Degree Register Box The Master Flow 10 in. x 4 in. x 6 in. 90°Register Box creates a right-angle transition from round pipe or insulated flexible duct to an air register. This box is made of galvanized steel. It can be installed with sheet metal screws. It is suitable... more | go to store |
| Master Flow 4 in. H X 16 in. W X 16 in. L Galvanized Mill Aluminum Undereave Vent Master Flow offers a full line of easy-to-install options for providing critical intake ventilation at the soffit or undereave portion of the roof. more | $29.11 $26.01 FREE shipping go to store |
| Master Flow 4 in. H X 18 in. W X 18.5 in. L Black Resin Roof Vent Master Flow resin square-top utility vent is designed for attic ventilation. The fully enclosed hood deters rodent and insect infiltration and leaf and pine needle clogging. more | $41.99 $38.54 FREE shipping go to store |
| Master Flow 12 in. x 2-1/4 in. to 6 in. Universal Register Box This Master Flow 12 in. W x 2-1/4 in. L x 6 in. Dia Universal Register Box is ideal for creating a straight in-line transition from a round pipe to an air register. Insulate ductwork for system efficiency and comfort. Galvanized steel construction... more | FREE shipping go to store |
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