16" X 16" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 17.75"W X 17.75"H] Aluminum - Cube Core + Product Details Size -

+ Product Details Size - 36"w X 26"h is the size for the duct opening measurement only

Works for all Air Conditioning applications including Ductless Mini-Split

reducing energy costs and maximizing HVAC system lifespan

+ Product Details Size – 12"w X 18"h is the size for the duct opening measurement only

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16" X 16" [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 17.75"W X 17.75"H] Aluminum - Cube Core + Product Details Size -+ Product Details Size 16"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" width X 17. 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