12"w X 12"h [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 13.75"H] w20h20 Actual Filter Size – 23

Actual Filter Size – 23 3/4"w x 25 3/4" x 1"

High Quality – Rigid aluminum construction with counter-sunk screw holes (screws included) and no sharp edges

75"H – fits a 14" X 12" duct opening

actual front end outer dimensions are 17" Width X 17" Height

+ Product Details Size - 20"w X 34"h is the size for the duct opening measurement only

12"w X 12"h [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 13.75"H] w20h20 Actual Filter Size – 23+ Product Details Size 12"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 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