20" X 6" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 21.75"W X 7.75"H] Compatible With Duct 10in actual front end outer dimensions

actual front end outer dimensions are approximately 22 5/8" width X 34 5/8" height -

+ Product Details Size - 6"w X 10"h is the size for the duct opening measurement only

For 8" duct opening

+ Product Details Size – 26"w X 16"h is the size for the duct opening measurement only

20" X 6" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 21.75"W X 7.75"H] Compatible With Duct 10in actual front end outer dimensions+ Product Details Size 20"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 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