14" x 36" or 36" x 14" Cube Core Eggcrate Return Air Grille White + Product Details Size –

+ Product Details Size – 24"w X 36"h is the size for the duct opening measurement only

+ Product Details Size – 12"w X 12"h is the size for the duct opening measurement only

and keep the cold air out during the Winter Months

The process is intuitive: simply select the appropriate ceiling square for your grill

actual front end outer dimensions are approximately 14 5/8" width X 24 5/8" height

14" x 36" or 36" x 14" Cube Core Eggcrate Return Air Grille White + Product Details Size –+ Product Details Size 14" x 36" or 36" x 14" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 15. 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