12"x 8" (Duct Opening Size) 3-Way Stamped Face Steel Ceiling/sidewall Air Supply Register - Vent Cover - Actual Outside Dimension 13.75" X 9.75" Easy adjust air flow control

Easy adjust air flow control with central lever

"outside" measurement is the surface you can see after the installation

Individually packed with card board box for ultra protection

The Listed size 24"x14" is for inside duct opening measurement

the second measurement) is the height(vertical measurement)

12"x 8" (Duct Opening Size) 3-Way Stamped Face Steel Ceiling/sidewall Air Supply Register - Vent Cover - Actual Outside Dimension 13.75" X 9.75" Easy adjust air flow controlThe Listed size 12"x 8" is for inside duct opening measurement (the duct hole) , actual outside dimension is 13. 75" X 9. 75". Stamped Face Steel Construction with 1 2" fin spacing for high air flow Three 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