22" x 34" or 34" x 22" Cube Core Eggcrate Return Air Grille Ceiling Whether you choose the modern

Whether you choose the modern contemporary

which the interior PET provides

actual front end outer dimensions are approximately 20 5/8" width X 16 5/8" height

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Actual Filter Size – 24 3/4"w x 33 3/4" x 1"

22" x 34" or 34" x 22" Cube Core Eggcrate Return Air Grille Ceiling Whether you choose the modern+ Product Details Size 22" x 34" or 34" x 22" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 23. 75" X 35. 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