12" x 4" Adjustable Blade Sidewall Ceiling Register Vent Cover Diffuser Heavy Duty Stamped Steel (Listed Size is for Duct Opening or Inside Measurement)

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 4”h is for duct opening measurement only, actual outsize overall dimensions is 14“ wide by 6” high. If your duct opening size is 12” x 4”, 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 4" is for the inside duct opening measurement. Actual outside measurement is 14" x 6"
• Heavy duty stamped steel face for long lasting use. Distance between the centers of two screws is 13"
• Multi-shutter damper with easy handle to adjust desired amount of air flow
• Adjustable blade allows all direction air deflection
• Individually shrink wrapped with card board pad in the back for protection