12"x4" Black Steel Adjustable Supply Register, Air Vent Cover with Damper for Sidewall Or Ceiling

Steel Adjustable Supply Grille for 12x4 Duct Opening, Black | Outer Dimensions: 13-3/4"W X 5-3/4"H

Adjustable spaced fins.
Primary use: Side wall and ceiling.
Screws are included with the system, standard.
Durable black powder coated.
Standard color is black.

HOW TO MEASURE A Grille
Always measure the size of the duct opening (the 'hole' in the duct/wall). Do not measure the entire size of the register itself. Size of the grille is; listed size +1.75-inch.

Understanding Width & Height
In a grille size, the first number always represents the width and the second one is the height. As an Example: If the hole on your wall/duct is 12 inches wide by 4 inches tall, order 12x4 option.