10"x 6" (duct opening size) 2-way Stamped Face Steel Ceiling/sidewall Air Supply Register - Vent Cover - Actual Outside Dimension 11.75" X 7.75" For example: If the hole

For example: If the hole on the wall is 16" wide by 25" tall

actual outsize overall dimensions is 13

•Multi-shutter damper with easy handle to adjust desired amount of air flow

Actual outside measurement is 14" x 6"

Outside overall dimension is 15

10"x 6" (duct opening size) 2-way Stamped Face Steel Ceiling/sidewall Air Supply Register - Vent Cover - Actual Outside Dimension 11.75" X 7.75" For example: If the holeFirst 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 10''w X 6''h 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