14"x 14" (Duct Opening Size) 4-Way Stamped Face Steel Ceiling/sidewall Air Supply Register - Vent Cover - Actual Outside Dimension 15.75" X 15.75" If your duct opening size

If your duct opening size is 8” x 6”

meticulously fashioned from heavy-duty 18-gauge steel to deliver unparalleled strength

Whether you prefer to leave it fully open for optimal airflow or close it off completely to redirect extra heat or air conditioning to other rooms

The listed size 16"x25" is for inside duct opening measurement

you will feel either too cold or too hot

14"x 14" (Duct Opening Size) 4-Way Stamped Face Steel Ceiling/sidewall Air Supply Register - Vent Cover - Actual Outside Dimension 15.75" X 15.75" If your duct opening sizeThe Listed size 14"x 14"is for inside duct opening measurement, actual outside dimension is 15. 75" X 15. 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