12" X 12" Baseboard Return Air Grille - HVAC Vent Duct Cover - 7/8" Margin Turnback For Flush Fit With Baseboard Work - White Brown + Product Details Size -

+ Product Details Size - The listed 5" diameter refers specifically to the size of the duct opening

and keep the cold air out during the Winter Months

while the included installation screws make setup quick and hassle-free

+ Product Details Size – 36"w X 14"h is the size for the duct opening measurement only

12" X 12" Baseboard Return Air Grille - HVAC Vent Duct Cover - 7/8" Margin Turnback For Flush Fit With Baseboard Work - White Brown + Product Details Size -+ 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