10"W X 4"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 11.875"W X 5.875"H] w18h18 + Product Details Size – 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
+ Product Details Size – 6" x 28" or 28" x 6" is the size for the duct opening measurement only
Powder-coat finish
The first number in a grille size
Actual Filter Size – 24 3/4"w x 23 3/4" x 1"
actual front end outer dimensions are approximately 35
10"W X 4"H [Duct Opening] ALUMINUM RETURN GRILLE EASY AIR FLOW LINEAR BAR GRILLES [OUTER DIMENSIONS: 11.875"W X 5.875"H] w18h18 + Product Details Size – 4 X 12 Is CRFG2028 Width_14in + Product Details Size – 6" x 28" or 28" x 6" is the size for the duct opening measurement only Powder coat finish