empire register co vent cover - 4x12 inches wall & ceiling air vent covers, heavy duty antique style 4"x12" duct opening white finish with steel damper attached, easy installation (not for floor use) 4 x 12 inch (pack of 1) wall white is up for auction in Tools & Home Improvement. This item is in New/Like New condition. Bid on this item at our Cincinnati - School Road location before the auction closes.