16" x 30" or 30" x 16" Cube Core Eggcrate Return Air Grille Compatible with Duct 8" actual front end outer dimensions

actual front end outer dimensions are approximately 28 5/8" width X 34 5/8" height

+ Product Details Size – 25"w X 28"h is the size for the duct opening measurement only

The premium durable material guarantees that they will never rust or wear through

High Quality – high quality solid stamped steel with counter-sunk screw holes (screws included) and no sharp edges

+ Product Details Size – 34"w X 14"h is the size for the duct opening measurement only

16" x 30" or 30" x 16" Cube Core Eggcrate Return Air Grille Compatible with Duct 8" actual front end outer dimensions+ Product Details Size 16" x 30" or 30" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 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