14" X 10" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 11.75"H] Grille Actual Filter Size – 13

Actual Filter Size – 13 3/4"w x 21 3/4" x 1"

+ Product Details Size – 20"w X 28"h is the size for the duct opening measurement only

+ Product Details Size - 14"w X 30"h is the size for the duct opening measurement only

The total outer size of this grille is the listed size plus 2 and 5/8"

14" X 10" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 15.75"W X 11.75"H] Grille Actual Filter Size – 13+ Product Details Size 14"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 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