30"W X 4"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 31.875"W X 5.875"H] RV Mobile Home + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – 8"w X 14"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 16 5/8" width X 30 5/8" height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 8" duct openings

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+ Product Details Size – 10"w X 30"h is the size for the duct opening measurement only

30"W X 4"H [Duct Opening] ALUMINUM RETURN GRILLE Easy Air Flow Linear Bar Grilles [Outer Dimensions: 31.875"W X 5.875"H] RV Mobile Home + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – 8"w X 14"h is the size for the duct opening measurement only actual front end outer dimensions are approximately 16 5 8" width X 30 5 8" height