36"W X 18"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 37.75"W X 19.75"H] w22h22 accordion-content { display: block 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
36"W X 18"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 37.75"W X 19.75"H] w22h22 accordion content { display: block 4 X 12 Is CRFG2028 Width_14in accordion content { display: block + Product Details Size – 16"w X 20"h is the size for the duct opening measurement only