20"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 21.875"W X 15.875"H] w26h26 + Product Details Size - 9" Diameter RFG1424 Black-HP Product Details Size 10

+ Product Details Size - 12"w X 8"h X 2"d (for duct opening measurement only)

Actual Filter Size – 27 3/4"w x 33 3/4" x 1"

+ Product Details Size – 25"w X 14"h is the size for the duct opening measurement only

4" X 10" Brass Victorian Floor Register Grille - Modern Contempo Decorative Grate - HVAC Vent Duct Cover - Brass Plated

20"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE Easy Air Flow Linear Bar Grilles [Outer Dimensions: 21.875"W X 15.875"H] w26h26 + Product Details Size 9" Diameter RFG1424 Black HP Product Details Size 10 + Product Details Size 12"w X 8"h X 2"d (for duct opening measurement only) Actual Filter Size – 27 3 4"w x 33 3 4" x 1"