12" x 30" or 30" x 12" Cube Core Eggcrate Return Air Grille Grille /* slightly looser */ color:

/* slightly looser */ color: #333

85" width X 25

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

+ Product Details Size – 20" x 20" is the size for the duct opening measurement only

12" x 30" or 30" x 12" Cube Core Eggcrate Return Air Grille Grille /* slightly looser */ color:+ Product Details Size 12" x 30" or 30" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" X 31. 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