24" x 28" or 28" x 24" Cube Core Eggcrate Return Air Grille 8" Round Duct Pipe with actual outer dimensions of

with actual outer dimensions of 12

14"w X 8"h Is The Size For The Duct Opening Measurement Only

+ Product Details Size – 28"w X 8"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 14 5/8" width X 26 5/8" height

24" x 28" or 28" x 24" Cube Core Eggcrate Return Air Grille 8" Round Duct Pipe with actual outer dimensions of+ Product Details Size 24" x 28" or 28" x 24" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 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