22" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 18in diameter actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

actual front end outer dimensions are approximately 20 5/8" width X 22 5/8" height -

Ideal for Walls & Ceilings: Designed for seamless installation in standard 10" X 10" duct openings

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

making installation a breeze

+ Product Details Size – 24"w X 10"h is the size for the duct opening measurement only

22" x 28" Cube Core Eggcrate Return Air Filter Grille for 1" Filter 18in diameter actual front end outer dimensions Compatible With Duct 7in Applications This sheet metal DDAG A 1212 actual front end outer dimensions are approximately 20 5 8" width X 22 5 8" height Ideal for Walls & Ceilings: Designed for seamless installation in standard 10" X 10" duct openings