12" x 16" or 16" x 12" Cube Core Eggcrate Return Air Grille return grille actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

actual front end outer dimensions are 22" width X 6" height

+ Product Details Size – 28"w X 24"h is the size for the duct opening measurement only

+ Product Details Size – 36"w X 6"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 34 5/8" width X 28 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 20" or 20" x 8" duct opening (measured at the opening)

12" x 16" or 16" x 12" Cube Core Eggcrate Return Air Grille return grille actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG A 1212 actual front end outer dimensions are 22" width X 6" height + Product Details Size – 28"w X 24"h is the size for the duct opening measurement only