18"W X 18"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 19.75"W X 19.75"H] w30h30 + Product Details Size - 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
18"W X 18"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 19.75"W X 19.75"H] w30h30 + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 18"w X 6"h is the size for the duct opening measurement only + Product Details Size – 6" x 12" or 12" x 6" is the size for the duct opening measurement only