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 front end outer dimensions

actual front end outer dimensions are approximately 22 5/8" width X 12 5/8" height -

+ Product Details Size - 18"w X 22"h is the size for the duct opening measurement only

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

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And The Cooler Air From Outside WIll Flow In From The Bottom

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 front end outer dimensions+ 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