14" x 6" Adjustable Blade Sidewall Ceiling Register Vent Cover Diffuser Heavy Duty Stamped Steel (Listed Size is for Duct Opening or Inside Measurement) Efficient Airflow: With a 10"

Efficient Airflow: With a 10" x 8" duct opening size

If your duct opening size is 10” x 6”

actual outsize overall dimensions is 14“ wide by 10” high

If your duct opening size is 14” x 6”

If your duct opening size is 8” x 4”

14" x 6" Adjustable Blade Sidewall Ceiling Register Vent Cover Diffuser Heavy Duty Stamped Steel (Listed Size is for Duct Opening or Inside Measurement) Efficient Airflow: With a 10"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 14w X 6h is for duct opening measurement only, actual outsize overall dimensions is 16 wide by 8 high. If your duct opening size is 14 x 6, this is the right size and will fit in well. If you measure outside or surface size, you will