12" X 10" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 11.75"H] 10" Round Duct Pipe Actual Filter Size – 23

Actual Filter Size – 23 3/4"w x 21 3/4" x 1"

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actual front end outer dimensions are approximately 36 5/8" width X 28 5/8" height

ensuring a sleek finish

+ Product Details Size - 26"w X 4"h is the size for the duct opening measurement only

12" X 10" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 11.75"H] 10" Round Duct Pipe Actual Filter Size – 23+ Product Details Size 12"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" width X 11. 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