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 Condensate Pump Accessories actual front end outer dimensions

actual front end outer dimensions are approximately 20 5/8" width X 12 5/8" height

+ Product Details Size & Compatibility – The 4" galvanized steel round side take-off is compatible with duct 4"

+ Product Details Size - 26"w X 26"h is the size for the duct opening measurement only

this fitting is perfectly compatible with 10-inch ducts

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 Condensate Pump Accessories actual front end outer dimensions4" 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