16"w X 20"h Aluminum Adjustable Return/Supply HVAC Air Grille Color_Aluminum You may think of grilles

You may think of grilles and registers as a generic component of the ventilation system in your house

Do not measure the overall size of the register itself

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

Heat Pump And Centralized Air Ducted Units

+ Product Details Size – 8" x 20" or 20" x 8" is the size for the duct opening measurement only

16"w X 20"h Aluminum Adjustable Return/Supply HVAC Air Grille Color_Aluminum You may think of grilles+ Product Details Size 16"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 85" width X 21. 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