12"w X 18"h Aluminum Adjustable Return/Supply HVAC Air Grille - FULL CONTROL HORIZONTAL AIRFLOW DIRECTION Aluminum - Cube Core } /* TEXT STYLING */

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See chart below:

+ Product Details Size – 12"w X 8"h is the size for the duct opening measurement only

+ Product Details Operating Temperature From -40°F To +248°F [-40°C To +120°C]

Plain Ends - Gives you the freedom to cut and flare at your own project needs

12"w X 18"h Aluminum Adjustable Return/Supply HVAC Air Grille - FULL CONTROL HORIZONTAL AIRFLOW DIRECTION Aluminum - Cube Core } /* TEXT STYLING */+ Product Details Size 12"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 85" width X 19. 85" height. High Quality Rigid aluminum construction with counter sunk screw holes (screws included) and no sharp edges. Installation Location Sidewall and ceiling. Design Unrestricted airflow for your HVAC system adjustable one way louver with full horizontal airflow directional control single