About Master Flow™ Register Box w/ Flange

Master Flow™ Universal Register Boxes create a straight (in-line) transition from round pipe or insulated flexible duct to an air register or grill. A built-in flange provides space for easy joist attachment, creating a more secure installation.

  Weight  Carton Quantity  Diameters

RBF8X4X6

8 lb. (3.6 kg) 6 6" (152.4 mm)
RBF10X4X6 13.1 lb. (5.9 kg) 12 6" (152.4 mm)
RBF10X6X6 17 lb. (7.71 kg) 12 6" (152.4 mm)
RBF12X4X6 8.2 lb. (3.7 kg) 6 6" (152.4 mm)
RBF12X6X6 8.5 lb. (3.9 kg) 5 6" (152.4 mm)
RBF12X12X8 15.5 lb. (7.03 kg)
8" (203.2 mm)
RBF14X6X8
8.7 lb. (3.9 kg) 4 8" (203.2 mm)
RBF14X8X8 14.5 lb. (6.58 kg) 7 8" (203.2 mm)

Features & Benefits

Product availability is subject to change without notice. Not all products are available from all facilities.

Product Documentation