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] 2-Way Deflection + Product Details Size –

+ Product Details Size – 12"w X 12"h

Actual Filter Size – 23 3/4"w x 31 3/4" x 1"

+ Product Details Size - 14"w X 26"h is the size for the duct opening measurement only

Don’t worry

7/8" Insulated Copper Coil Line - Seamless Pipe Tube for HVAC

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] 2-Way Deflection + Product Details Size –+ 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