18" x 26" or 26" x 18" Cube Core Eggcrate Return Air Grille Compatible With Duct 8in Actual Filter Size – 31 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
18" x 26" or 26" x 18" Cube Core Eggcrate Return Air Grille Compatible With Duct 8in Actual Filter Size – 31 4 X 12 Is CRFG2028 Width_14in Actual Filter Size – 31 3 4"w x 31 3 4" x 1" + Product Details Size 32"w X 12"h is the size for the duct opening measurement only