26"W X 8"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 27.875"W X 9.875"H] with filter Actual Filter Size – 29 4 X 12 Is CRFG2028 Width_14in

Actual Filter Size – 29 3/4"w x 27 3/4" x 1"

+ Product Details Size – 10" X 2" is the size for the duct opening (floor/vent hole) measurement only

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"Opposing" back blades

+ Product Details Size – 6" x 32" or 32" x 6" is the size for the duct opening measurement only

26"W X 8"H [Duct Opening] ALUMINUM RETURN GRILLE Easy Air Flow Linear Bar Grilles [Outer Dimensions: 27.875"W X 9.875"H] with filter Actual Filter Size – 29 4 X 12 Is CRFG2028 Width_14in Actual Filter Size – 29 3 4"w x 27 3 4" x 1" + Product Details Size – 10" X 2" is the size for the duct opening (floor vent hole) measurement only