8" x 28" or 28" x 8" Cube Core Eggcrate Return Air Grille 12" Round Duct Pipe actual front end outer dimensions

actual front end outer dimensions are approximately 22 5/8" width X 42 5/8" height

as the multidirectional design ensures consistent temperature control

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+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 32" or 32" x 6" duct opening (measured at the opening)

8" x 28" or 28" x 8" Cube Core Eggcrate Return Air Grille 12" Round Duct Pipe actual front end outer dimensions+ Product Details Size 8" x 28" or 28" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" X 29. 75". High Quality High quality, rust free aluminum construction with smooth finished edges and counter sunk screw holes (screws included); no sharp edges.. Installation Location sidewall and ceiling. Design Cubic core eggcrate design Offers highest airflow efficiency at almost 95%, reducing