4" X 12" Floor Register with Louvered Design - Heavy Duty Rigid Floor Air Supply with Damper & Lever - Outer Dimensions [ 5.5 X 13.5] - Light Grey w32h32 + Product Details Size -

+ Product Details Size - 34"w X 28"h X 2"d (for duct opening measurement only)

+ Product Details Size - 32"w X 26"h X 2"d (for duct opening measurement only)

+ Product Details Size – The 5" sheet metal 45-degree oval vertical duct angle is compatible with duct 5"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 18" x 34" OR 34" x 18" duct opening (measured at the opening)

+ Product Details Size & Compatibility – The size of the wall angle register boot is 12" X 6" X 8" and it is compatible with duct 8"

4" X 12" Floor Register with Louvered Design - Heavy Duty Rigid Floor Air Supply with Damper & Lever - Outer Dimensions [ 5.5 X 13.5] - Light Grey w32h32 + Product Details Size -4" X 12" Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 4. 5" X 12. 5" SEE BELOW IN DESCRIPTION How To Measure A Grille Why HVAC Premium? You may think of grilles and registers as a generic component of the ventilation system in your house. But they are also the most visible representation of your air system. These grilles and registers give you an extra measure of quality that are visible to your family