RV and Home White Stamped Steel Floor Diffuser/Register with Damper 12" X 2" (Duct Opening Size) Outside Dimension 13.5"x 3.75" Individually packed with card board

Individually packed with card board box for ultra protection

Acting as a reliable safeguard

making it ideal for connecting commercial gas appliances while allowing safe movement during cleaning or maintenance

If your duct opening size is 10” x 4”

actual outsize overall dimensions is 13

RV and Home White Stamped Steel Floor Diffuser/Register with Damper 12" X 2" (Duct Opening Size) Outside Dimension 13.5"x 3.75" Individually packed with card boardThe Listed size 12"x 2" is for inside duct opening measurement, actual outside dimension is 13. 5"x 3. 75" 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. Distance between the two screw holes is 13. 25". White powder coating with matte finish Individually shrink wrapped with card board pad in the back for extra