28"W X 20"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 29.75"W X 21.75"H] w8h8 please note that the total 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
please note that the total outer dimensions of the grille measure 7" in diameter
Slots are angled to diversify the airflow in 2 way direction
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+ Product Details Size - 36"w X 8"h is the size for the duct opening measurement only
ventilation
28"W X 20"H [Duct Opening] Steel Air Vent Return Grille HVAC VENT DUCT COVER DIFFUSER [Outer Dimensions: 29.75"W X 21.75"H] w8h8 please note that the total 4 X 12 Is CRFG2028 Width_14in please note that the total outer dimensions of the grille measure 7" in diameter Slots are angled to diversify the airflow in 2 way direction