About Master Flow™ Register Box ‑ 90 Degree

The Master Flow™ 90 degree 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 for most HVAC applications.

  Weight  Carton Quantity  Diameters

90RB12X2.2X6

10 lb. (4.55 kg) 6 6" (152.4 mm)
90RB10X4X5 16 lb. (7.26 kg); 16.3 lb. (7.39 kg) 10 5" (127 mm)
90RB10X4X6 16.3 lb. (7.39 kg) 10 6" (152.4 mm)
90RB10X6X6 14 lb. (6.35 kg) 8 6" (152.4 mm)
90RB12X4X5 14.8 lb. (6.71 kg); 10.2 lb (4.63 kg) 9 5" (127 mm), 6" (152.4 mm)
90RB12X4X6 10.2 lb. (4.63 kg)
6" (152.4 mm)
90RB12X6X6
12.8 lb. (5.81 kg) 7 6" (152.4 mm)

Features & Benefits

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

Product Documentation