12"x 12" (Duct Opening Size) 4-Way Stamped Face Steel Ceiling/sidewall Air Supply Register - Vent Cover - Actual Outside Dimension 13.75" X 13.75" If your duct opening size

If your duct opening size is 12” x 8”

actual outside dimension is 13

Neck Size 8”

featuring a 2-1/2" grooved collar for faster

even airflow for improved ventilation and indoor air circulation in residential and commercial spaces

12"x 12" (Duct Opening Size) 4-Way Stamped Face Steel Ceiling/sidewall Air Supply Register - Vent Cover - Actual Outside Dimension 13.75" X 13.75" If your duct opening sizeThe Listed size 12"x 12"is for inside duct opening measurement, actual outside dimension is 13. 75" X 13. 75" Stamped Face Steel Construction with 1 2" fin spacing for high air flow Four Way Air Flow deflection Design Multi shutter damper with easy handle to adjust desired amount of air flow Individually shrink wrapped with card board pad in the back for extra protection