14"W X 30"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 15.75"W X 31.75"H] Floor Grille + Product Details Size - 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
+ Product Details Size - 20"w X 2"h is the size for the duct opening measurement only
See chart below:
and slashes energy costs
+ Product Details Size - 4"w X 18"h is the size for the duct opening measurement only
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14"W X 30"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 15.75"W X 31.75"H] Floor Grille + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 20"w X 2"h is the size for the duct opening measurement only See chart below: