30" x 36" or 36" x 30" Cube Core Eggcrate Return Air Grille w36h36 actual front end outer dimensions

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

actual front end outer dimensions are approximately 34 5/8" width X 20 5/8" height

Design – Removable door/face for easy filter change & cleaning - uses a 1" thick filter

If you are looking to enhance your project with a top-of-the-line unit

30" x 36" or 36" x 30" Cube Core Eggcrate Return Air Grille w36h36 actual front end outer dimensions+ Product Details Size 30" x 36" or 36" x 30" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 32. 5" X 38. 5". 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