14" X 12" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 13.75"H] Color_Red Oak Wood + Product Details Size -

+ Product Details Size - 24"w X 20"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 20" duct opening (measured at the opening)

Measuring 8" in diameter for the duct opening

+ Product Details Size - 20"w X 8"h is the size for the duct opening measurement only

+ Product Details Size - 18"w X 18"h X 2"d (for duct opening measurement only)

14" X 12" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 13.75"H] Color_Red Oak Wood + Product Details Size -+ Product Details Size 14"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 75" width X 13. 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