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Ceiling Boxes from The Duct Shop are the perfect fitting to use when you need to put a register in the ceiling to supply air into your room. All Ceiling Boxes are manufactured from the highest of quality galvanized steel. Sizes listed are the box opening first and second, then the round size third. They have a plaster ground flange installed for easy finishing to your plaster or drywall.
Details: 4" High, 26 Gauge Galvanized Steel