28" x 28" Cube Core Eggcrate Return Air Grille return grille actual front end outer dimensions

actual front end outer dimensions are approximately 34 5/8" width X 16 5/8" height

+ Product Details Size – 28"w X 36"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 11

+ Product Description Elevate your space with our elegant Ceiling Grille Diffuser

Actual Filter Size – 17 3/4"w x 15 3/4" x 1"

28" x 28" Cube Core Eggcrate Return Air Grille return grille actual front end outer dimensions+ Product Details Size 28" x 28" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 29. 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 electric