22" x 28" or 28" x 22" Cube Core Eggcrate Return Air Grille White Some of our best features

Some of our best features aren't readily apparent

no professional tools needed

Powder-coat finish

Actual Filter Size – 29 3/4"w x 9 3/4" x 1"

22" x 28" or 28" x 22" Cube Core Eggcrate Return Air Grille White Some of our best features+ Product Details Size 22" x 28" or 28" x 22" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 23. 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