14"W X 24"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 15.75"W X 25.75"H] Color_Black + Product Details Size - Suitable for all AC 8in diameter 12125SDCLNGBX

+ Product Details Size - 18"w X 4"h is the size for the duct opening measurement only

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

powder-coated surface is scratch-resistant

+ Product Details Size – 15" Corner Baseboard Grille - White - HVAC corner vent cover

14"W X 24"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 15.75"W X 25.75"H] Color_Black + Product Details Size Suitable for all AC 8in diameter 12125SDCLNGBX + Product Details Size 18"w X 4"h is the size for the duct opening measurement only + Product Details Size – 10" X 2" is the size for the duct opening (floor vent hole) measurement only