22" x 24" or 24" x 22" Cube Core Eggcrate Return Air Grille Compatible With Duct 10in actual front end outer dimensions

actual front end outer dimensions are approximately 24 5/8" width X 27 5/8" height

75"H – fits a 18" X 4" duct opening

actual front end outer dimensions are approximately 12 5/8" width X 24 5/8" height

+ Product Details Size – 20"w X 16"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 28 5/8" width X 10 5/8" height

22" x 24" or 24" x 22" Cube Core Eggcrate Return Air Grille Compatible With Duct 10in actual front end outer dimensions+ Product Details Size 22" x 24" or 24" x 22" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 23. 75" X 25. 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