12"w X 8"h Aluminum Adjustable Return/Supply HVAC Air Grille - Full Control Horizontal Airflow Direction Return Grille accordion-title:hover { background-color: #f0f0f0

accordion-title:hover { background-color: #f0f0f0

height: 20px

actual front end outer dimensions are approximately 3

much more than required 700 PSI for R410

and the second number represents the height

12"w X 8"h Aluminum Adjustable Return/Supply HVAC Air Grille - Full Control Horizontal Airflow Direction Return Grille accordion-title:hover { background-color: #f0f0f0+ Product Details Size 12"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 85" width X 9. 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