12" X 8" Baseboard Return Air Grille - HVAC Vent Duct Cover - 7/8" Margin Turnback For Flush Fit With Baseboard Work - White w25h25 + Product Details Size -

+ Product Details Size - 12"w X 16"h is the size for the duct opening measurement only

+ Product Details Size - 10"w X 30"h X 2"d (for duct opening measurement only)

making it a reliable choice for improving indoor air quality

Universal Fit – Measures 6-1/4" wide x 4-3/4" high x 3" deep

12" X 8" Baseboard Return Air Grille - HVAC Vent Duct Cover - 7/8" Margin Turnback For Flush Fit With Baseboard Work - White w25h25 + Product Details Size -+ Product Details Size 12"w X 8"h Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 13. 75" Width X 9. 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 shipment