12" x 10" Adjustable Blade Sidewall Ceiling Register Vent Cover Diffuser Heavy Duty Stamped Steel (Listed Size is for Duct Opening or Inside Measurement) actual overall outside dimension is

actual overall outside dimension is 18

15" long heavy duty steel construction with decor oil brunched powder coating finish

guaranteeing that it arrives at your home in perfect condition

This product has listed size 10“w X 4”h is for duct opening measurement only

The Listed size 16"x16" is for inside duct opening measurement

12" x 10" Adjustable Blade Sidewall Ceiling Register Vent Cover Diffuser Heavy Duty Stamped Steel (Listed Size is for Duct Opening or Inside Measurement) actual overall outside dimension isFirst 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 12w X 10h is for duct opening measurement only, actual outsize overall dimensions is 14 wide by 12 high. If your duct opening size is 12 x 10, this is the right size and will fit in well. If you measure outside or surface size, you