12" X 10" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 11.75"H] w30h30 + Product Details Size -

+ Product Details Size - 10"w X 18"h is the size for the duct opening measurement only

Crafted from high-quality red oak wood

and versatile for any project

Effortless Integration: Crafted for easy connection to supply grilles of drop ceiling T-Bar vent covers

+ Product Details Size – 8" x 8" is the size for the duct opening measurement only

12" X 10" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 11.75"H] w30h30 + Product Details Size -+ Product Details Size 12"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" width X 11. 75" height. High Quality High quality steel with counter sunk screw holes (screws included) and no sharp edges. Equipped with a lever for easy airflow adjustment and dampening. Airflow Control Adjustable airflow lever allows precise control over the direction and volume of air. Installation