10" X 4" [Duct Opening] 2-Way Vertical Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 5.75"H] Color_Red Oak Wood Looks like new after years

Looks like new after years of use

Think of the diameter as a straight line from one end to the other

actual front end outer dimensions are approximately 10 5/8" width X 26 5/8" height

+ Product Details Size – 26"w X 34"h is the size for the duct opening measurement only

making it perfect for both residential and commercial installations

10" X 4" [Duct Opening] 2-Way Vertical Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 5.75"H] Color_Red Oak Wood Looks like new after years+ Product Details Size 10"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" width X 5. 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