24" x 30" or 30" x 24" Cube Core Eggcrate Return Air Grille 8" Round Duct Pipe Actual Filter Size – 33

Actual Filter Size – 33 3/4"w x 13 3/4" x 1"

+ Product Details Size - 20"w X 12"h is the size for the duct opening measurement only

Carefully packaged for protection during shipment

actual front end outer dimensions are approximately 12 5/8" width X 34 5/8" height

+ Product Details Size – 30"w X 26"h is the size for the duct opening measurement only

24" x 30" or 30" x 24" Cube Core Eggcrate Return Air Grille 8" Round Duct Pipe Actual Filter Size – 33+ Product Details Size 24" x 30" or 30" x 24" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 25. 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