26" x 36" or 36" x 26" Cube Core Eggcrate Return Air Grille Compatible With Duct 8in actual front end outer dimensions

actual front end outer dimensions are approximately 22 5/8" width X 32 5/8" height

and installation is quick and simple with the included screws

+ Product Details Size – 40"w X 10"h is the size for the duct opening measurement only

undisturbed airflow

Scratch-Resistant

26" x 36" or 36" x 26" Cube Core Eggcrate Return Air Grille Compatible With Duct 8in actual front end outer dimensions+ Product Details Size 26" x 36" or 36" x 26" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 27. 75" X 37. 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