10"x 6" (Duct Opening Size) 1-Way Stamped Face Steel Ceiling/sidewall Air Supply Register - Vent Cover - Actual Outside Dimension 11.75" X 7.75" •The Listed size 10"x 8"

•The Listed size 10"x 8" is for inside duct opening measurement

If your duct opening size is 12” x 6”

Select the listed size that match the duct opening size

•Two way air flow deflection design

10"x 6" (Duct Opening Size) 1-Way Stamped Face Steel Ceiling/sidewall Air Supply Register - Vent Cover - Actual Outside Dimension 11.75" X 7.75" •The Listed size 10"x 8"First thing to know about size selection: take the vent cover off the wall or ceiling. Measure the duct opening where the vent can fit in. Use the measurement to determine right size to buy. This product has listed size 10w X 6h is for duct opening measurement only, actual outsize overall dimensions is 11. 75 wide by 7. 75 high. If your duct opening size is 10 x 6, this is the right size and will fit in well. If you measure outside or surface size,