Home / HVAC Supplies / Master Flow 12 in. x 4 in. to 6 in. Universal Register Box
  • Master Flow 12 in. x 4 in. to 6 in. Universal Register Box
  • Master Flow 12 in. x 4 in. to 6 in. Universal Register Box
  • Master Flow 12 in. x 4 in. to 6 in. Universal Register Box
  • Master Flow 12 in. x 4 in. to 6 in. Universal Register Box

Master Flow 12 in. x 4 in. to 6 in. Universal Register Box

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Register Boxes create a straight (in-line) transition from round pipe or insulated flexible duct to an air register or grill. Available in an assortment of configurations. This particular item transitions from 12 in. X 4 in. register to a 6 in. pipe or flexible duct.