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" Match the duct opening size

Match the duct opening size with the listed size of 14”x 8”

Distance between the centers of two screws is 13"

The Listed size 14"x14" is for inside duct opening measurement

actual outside dimension is 13

and rafters

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" Match the 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