38"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 39.875"W X 15.875"H] Brown + Product Details Size –

+ Product Details Size – 4"h X 10"h is the size for the duct opening measurement only

Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 18" duct openings

Easy Installation – Just pop the diffuser right into the wall duct hole and the side springs will hold it right into place so that it looks clean

+ Product Details Size - 32"w X 25"h is the size for the duct opening measurement only

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38"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 39.875"W X 15.875"H] Brown + Product Details Size –+ Product Details Size 38"w X 14"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 39. 875" width X 15. 875" height. High Quality High quality aluminum with counter sunk screw holes (screws included) and no sharp edges. Design Unrestricted airflow For Your HVAC system noise free components no vibrating louvers etc. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was