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" Two sunk screw holes located

Two sunk screw holes located at both sides of the register for ceiling and wall mounting with included screws

The listed size 8" x 6" is for the inside duct opening measurement

Screws are included for easy installation

corrosion resistance

Individually packed with card board box for extra protection

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" Two sunk screw holes locatedFirst 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,