16" x 26" or 26" x 16" Cube Core Eggcrate Return Air Grille 8in diameter actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

actual front end outer dimensions are approximately 36 5/8" width X 32 5/8" height

+ Product Details Size - 34"w X 16"h is the size for the duct opening measurement only

Actual Filter Size – 9 3/4"w x 17 3/4" x 1"

Actual Filter Size – 33 3/4"w x 13 3/4" x 1"

+ Product Details Size – 18" x 24" or 24" x 18" is the size for the duct opening measurement only

16" x 26" or 26" x 16" Cube Core Eggcrate Return Air Grille 8in diameter actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG A 1212 actual front end outer dimensions are approximately 36 5 8" width X 32 5 8" height + Product Details Size 34"w X 16"h is the size for the duct opening measurement only