6" X 6" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 7.75"W X 7.75"H] Color_White + Product Details Size -

+ Product Details Size - 14"w X 30"h is the size for the duct opening measurement only

+ Product Details Size – 20"w X 28"h is the size for the duct opening measurement only

For a visual guide on how to measure your vent hole before ordering a grille

+ Product Details Size - 12"w X 16"h is the size for the duct opening measurement only

6" X 6" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 7.75"W X 7.75"H] Color_White + Product Details Size -+ Product Details Size 6"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 75" width X 7. 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 Location