RV and Home White Stamped Steel Floor Diffuser/Register with Damper 10" X 3" (Duct Opening Size) Outside Dimension 11.5"x 4.5" Distance between the centers of

Distance between the centers of two screws is 12

Sidewall/Ceiling Register Measurement

VERSATILITY: This deflector is built with durable transparent material

One Way Air Flow deflection Design

RV and Home White Stamped Steel Floor Diffuser/Register with Damper 10" X 3" (Duct Opening Size) Outside Dimension 11.5"x 4.5" Distance between the centers ofThe Listed size 10"x 3" is for inside duct opening measurement, actual outside dimension is 11. 5"x 4. 5" Butterfly damper with easy foot operated control dial for desired air flow Two sunk screw holes located at both sides of the register for ceiling and wall mounting with included screws White powder coating with matte finish Individually shrink wrapped with card board pad in the back for extra protection