10" x 28" or 28" x 10" Cube Core Eggcrate Return Air Grille White + Product Details Size –

+ Product Details Size – 14"w X 10"h is the size for the duct opening measurement only

This versatile diffuser is adaptable to various airflow needs

With easy installation

actual front end outer dimensions are approximately 36 5/8" width X 18 5/8" height

Choose from a palette of four elegant colors – white

10" x 28" or 28" x 10" Cube Core Eggcrate Return Air Grille White + Product Details Size –+ Product Details Size 10" x 28" or 28" x 10" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 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