22"W X 28"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 23.75"W X 29.75"H] fixed bar 4" X 10" Brass Victorian 4 X 12 Is CRFG2028 Width_14in

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

+ Product Details Size - 32"w X 18"h is the size for the duct opening measurement only

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Operating temperature from -40°f to +248°f [-40°c to +120°c]

+ Product Details Size - 25"w X 8"h is the size for the duct opening measurement only

22"W X 28"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 23.75"W X 29.75"H] fixed bar 4" X 10" Brass Victorian 4 X 12 Is CRFG2028 Width_14in 4" X 10" Brass Victorian Floor Register Grille Modern Contempo Decorative Grate HVAC Vent Duct Cover Brass Plated + Product Details Size 32"w X 18"h is the size for the duct opening measurement only