RV and Home White Stamped Steel Floor Diffuser/Register with Damper 12" X 2" (Duct Opening Size) Outside Dimension 13.5"x 3.75" If your duct opening size

If your duct opening size is 12” x 6”

If your duct opening size is 10” x 4”

The Listed size 12"x 12"is for inside duct opening measurement

The Shark Industrial faucet connector features a 1/2-inch FIP x 1/2- inch FIP nut connection

durable material to withstand many different operating conditions

RV and Home White Stamped Steel Floor Diffuser/Register with Damper 12" X 2" (Duct Opening Size) Outside Dimension 13.5"x 3.75" If your duct opening sizeThe 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