30"W X 36"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 31.75"W X 37.75"H] sidewall & EN 13180 standards 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
& EN 13180 standards
+ Product Details Size – 20"w X 10"h is the size for the duct opening measurement only
+ Product Details Size - 22"w X 24"h is the size for the duct opening measurement only
The total outer size of this grille is the listed size plus 2
+Product Details Size – 2"h x 12"w is the size for the duct opening measurement only
30"W X 36"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 31.75"W X 37.75"H] sidewall & EN 13180 standards 4 X 12 Is CRFG2028 Width_14in & EN 13180 standards + Product Details Size – 20"w X 10"h is the size for the duct opening measurement only