8" X 6" [Duct Opening] 2-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 9.75"H X 7.75"H] 6in diameter and the included installation screws

and the included installation screws make setup simple and efficient

actual front end outer dimensions are approximately 10 5/8" width X 30 5/8" height

+ Product Details Size – 29"w X 22"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 20 5/8" width X 34 5/8" height

+ Product Details Size – 36"w X 26"h is the size for the duct opening measurement only

8" X 6" [Duct Opening] 2-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 9.75"H X 7.75"H] 6in diameter and the included installation screws+ Product Details Size 8"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 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