12" x 18" or 18" x 12" Cube Core Eggcrate Return Air Grille Color_Anodized Aluminum transparent design and durable construction

transparent design and durable construction

actual front end outer dimensions are approximately 20 5/8" width X 12 5/8" height

actual front end outer dimensions are approximately 16 5/8" width X 38 5/8" height

Crafted from high-quality aluminum

and durability

12" x 18" or 18" x 12" Cube Core Eggcrate Return Air Grille Color_Anodized Aluminum transparent design and durable construction+ Product Details Size 12" x 18" or 18" x 12" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 75" X 19. 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