6" x 4" Adjustable Blade Sidewall Ceiling Register Vent Cover Diffuser Heavy Duty Stamped Steel (Listed Size is Duct Opening Inside Measurement) 9" and two screws are

9" and two screws are included

This product has listed size 10“w X 6”h is for duct opening measurement only

actual outsize overall dimensions is 12“ wide by 6” high

Actual outside measurement is 14" x 6"

Easy adjust air flow control with central lever

6" x 4" Adjustable Blade Sidewall Ceiling Register Vent Cover Diffuser Heavy Duty Stamped Steel (Listed Size is Duct Opening Inside Measurement) 9" and two screws areThe listed size 6" x 4" is for the inside duct opening measurement. Heavy duty stamped steel face for long lasting use Multi shutter damper with easy handle to adjust desired among of air flow Adjustable blade allows all horizontal direction air deflection Individually shrink wrapped and packed with card board box for extra protection