The Master Flow 10 in. x 6 in. x 6 in. Universal Register Box with Flange is made of 30-Gauge, galvanized steel. It creates a straight (in-line) transition from round pipe or insulated flexible duct to an air register or grille. The built-in flange provides space for easy joist attachment for a more secure installation.
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- Creates a straight (in-line) transition from 6 in. round pipe or insulated flexible duct to a 10 in. x 6 in. air register or grille
- Built-in flange provides area for register screws, sheetrock frame or joist attachment
- Flange allows for installation before dry walling
- Maximum temperature rating of 390 degree F, minimum temperature rating of 100 degree F



















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