24" X 12" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 25.75"W X 13.75"H] Color_White 40"w X 16"h Is The

40"w X 16"h Is The Size For The Duct Opening Measurement Only

Actual Filter Size – 11 3/4"w x 31 3/4" x 1"

or just adding updated elements to your current home

Easy Installation – Complete set of sponge gasket and mounting frame included

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24" X 12" [Duct Opening] 2-Way Horizontal Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 25.75"W X 13.75"H] Color_White 40"w X 16"h Is The+ Product Details Size 24"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 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