25"W X 16"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 26.875"W X 17.875"H] w24h24 the second number represents the Width_20in These won t hinder RFG1620 FBA

the second number represents the width

+ Product Details Size - 32"w X 30"h X 2"d (for duct opening measurement only)

With a solid base for stability

+ Product Details Perfect Fit & Easy Sizing - Designed for a 36" x 18" OR 18" x 36" duct opening (measured at the opening)

+ Product Details Size - 8"w X 30"h X 2"d (for duct opening measurement only)

25"W X 16"H [Duct Opening] ALUMINUM RETURN GRILLE Easy Air Flow Linear Bar Grilles [Outer Dimensions: 26.875"W X 17.875"H] w24h24 the second number represents the Width_20in These won t hinder RFG1620 FBA the second number represents the width + Product Details Size 32"w X 30"h X 2"d (for duct opening measurement only)