TL;DR
A supply register is the louvered grille through which conditioned air leaves the ductwork and enters a room, usually fitted with an adjustable damper to aim or throttle the airflow. Stamped-steel, aluminum, and plastic models come sized to standard duct boots such as 4x10 or 6x12 inches and mount in floors, walls, or ceilings.
What it means
A supply register is the louvered grille through which conditioned air leaves the ductwork and enters a room, usually fitted with an adjustable damper to aim or throttle the airflow. Stamped-steel, aluminum, and plastic models come sized to standard duct boots such as 4x10 or 6x12 inches and mount in floors, walls, or ceilings. Because it sits on the pressurized side of the system, closing or blocking too many of them unbalances airflow and forces leakage at duct joints.
Where it sits in the glossary
Supply register is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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