Three-Way Plastic Side Wall/Ceiling Register in White 12" w X 6" h for Duct Opening (Outside Dimension is 13.75" w X 8" h)

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 12“w X 6”h is for duct opening measurement only, actual outsize overall dimensions is 13.75” wide by 8” high. If your duct opening size is 12” x 6”, this is the right size and will fit in well. If you measure outside or surface size, you will get a large one and it will not fit.

• The Listed size 12"x 6" is for inside duct opening measurement, actual outside dimension is 13.75" X 8"
• All plastic construction with 1/2" fin spacing for high air flow with rust proof feature perfect for areas with high moisture
• Three way air deflection design with bright white face and black damper in the back
• Multi-shutter damper with easy handle to adjust desired amount of air flow
• Two screw holes on each side with distance of 13" and two screws are included