24" x 26" or 26" x 24" Cube Core Eggcrate Return Air Grille Grilles Vertical blades in the back

Vertical blades in the back

actual front end outer dimensions are approximately 34 5/8" width X 27 5/8" height -

75" Width X 37

Actual Filter Size – 31 3/4"w x 19 3/4" x 1"

The total outer size of this grille is the listed size plus 2

24" x 26" or 26" x 24" Cube Core Eggcrate Return Air Grille Grilles Vertical blades in the back+ Product Details Size 24" x 26" or 26" x 24" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 75" X 27. 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