RV and Home Brown Stamped Steel Floor Diffuser/Register with Damper 12" X 2" (Duct Opening Size) Outside Dimension 13.5"x 3.75" Upgrade your HVAC system with

Upgrade your HVAC system with this high-performance 3-cone ceiling air diffuser

Do not use outside measurement for size selection or it would be too bit to fit

The Listed size 8"x 8" is for inside duct opening measurement

Do not measure the surface as registers/vents are measured by inside dimensions

this ingenious feature prevents the loss of jewelry or small personal items that might otherwise slip through the vents and vanish into the ductwork

RV and Home Brown Stamped Steel Floor Diffuser/Register with Damper 12" X 2" (Duct Opening Size) Outside Dimension 13.5"x 3.75" Upgrade your HVAC system withThe 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 Brown powder coating with matte finish Individually shrink wrapped with card board pad in the back for extra protection