18 X 8 Duct Opening | 3 WAY Steel Air Supply Diffuser for Sidewall and Ceiling

18"W x 8"H [Duct Opening Measurements] 3 WAY Steel Air Supply Diffuser | Vent Cover Grill for Sidewall and Ceiling | White | Outer Dimensions: 19.75"W X 9.75"H for 18x8 Duct Opening

1/2 inch spaced fins set at 40 degrees.
Primary use: Side wall and ceiling.
Screws are included with the system, standard.
All-steel construction.
Durable white powder coated.
Standard color is white (Ral9016).

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 18 inches wide by 8 inches tall, order 18x8 option.

For this particular product you're viewing at the moment, the hole on your wall/duct opening should be 18x8 duct opening.

Click the 'Add To Cart' button now to order your Air Supply Grille!