36"W X 10"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 37.875"W X 11.875"H] 14" Round Duct Pipe + Product Details Size - 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
36"W X 10"H [Duct Opening] ALUMINUM RETURN GRILLE Easy Air Flow Linear Bar Grilles [Outer Dimensions: 37.875"W X 11.875"H] 14" Round Duct Pipe + Product Details Size 4 X 12 Is CRFG2028 Width_14in + Product Details Size 32"w X 20"h X 2"d (for duct opening measurement only) allowing unrestricted airflow for optimal HVAC performance