12" X 12" Baseboard Return Air Grille - HVAC Vent Duct Cover - 7/8" Margin Turnback For Flush Fit With Baseboard Work - White Brown with actual outer dimensions of

with actual outer dimensions of 8

Actual Front End Outer Dimensions Are 13

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 36" or 36" x 6" duct opening (measured at the opening)

+ Product Details Size – 24"w X 34"h is the size for the duct opening measurement only

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12" X 12" Baseboard Return Air Grille - HVAC Vent Duct Cover - 7/8" Margin Turnback For Flush Fit With Baseboard Work - White Brown with actual outer dimensions of+ Product Details Size 12"w X 12"h Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 13. 75" Width X 13. 75" Height SEE BELOW IN DESCRIPTION How To Measure A Grille Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was just waxed. High Quality Easy unrestricted airflow for your HVAC system 7 8" margin turnback. Carefully Shrink Wrapped With cardboard backing to prevent damage in