25"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 26.875"W X 15.875"H] flat stamped steel + Product Details Size – 7" Round Duct Pipe CRG828 Product Details Size 14

+ Product Details Size – 10" x 28" or 28" x 10" is the size for the duct opening measurement only

+ Product Details Size – 16"w X 10"h is the size for the duct opening measurement only

Airflow – Easy unrestricted airflow for your HVAC system

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 32" OR 32" x 28" duct opening (measured at the opening)

+ How To Measure A Grille

25"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE Easy Air Flow Linear Bar Grilles [Outer Dimensions: 26.875"W X 15.875"H] flat stamped steel + Product Details Size – 7" Round Duct Pipe CRG828 Product Details Size 14 + Product Details Size – 10" x 28" or 28" x 10" is the size for the duct opening measurement only + Product Details Size – 16"w X 10"h is the size for the duct opening measurement only