12"w X 18"h Aluminum Adjustable Return/Supply HVAC Air Grille - FULL CONTROL HORIZONTAL AIRFLOW DIRECTION Aluminum - Cube Core Plain Ends - Gives you

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

See chart below:

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

+ Product Details Size – 24"w X 12"h is the size for the duct opening measurement only

10"w X 4"h Is The Size For The Duct Opening Measurement Only

12"w X 18"h Aluminum Adjustable Return/Supply HVAC Air Grille - FULL CONTROL HORIZONTAL AIRFLOW DIRECTION Aluminum - Cube Core Plain Ends - Gives you+ 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