12" x 6" or 6" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter - Aluminum - White [Outer Dimensions: 14.5" X 8.5"] Compatible with Duct 8" + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+ Product Details Size – 8"w X 32"h is the size for the duct opening measurement only

+ Product Details Size - 24"w X 12"h is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 8" or 8" x 6" duct opening (measured at the opening)

High Quality – Solid rigid steel body for durability and reliability

+ Product Details Size – 10" x 12" or 12" x 10" is the size for the duct opening measurement only

12" x 6" or 6" x 12" Cube Core Eggcrate Return Air Filter Grille for 1" Filter Aluminum White [Outer Dimensions: 14.5" X 8.5"] Compatible with Duct 8" + Product Details Size – Compatible With Duct 7in Applications This sheet metal DDAG A 1212 + Product Details Size – 8"w X 32"h is the size for the duct opening measurement only + Product Details Size 24"w X 12"h is the size for the duct opening measurement only