30" x 36" or 36" x 30" Cube Core Eggcrate Return Air Grille Color_Aluminum + Product Details Size –

+ Product Details Size – 22" x 36" or 36" x 22" is the size for the duct opening measurement only

Actual Filter Size – 29 3/4"w x 11 3/4" x 1"

providing maximum flexibility

no screws will be visible

actual front end outer dimensions are approximately 14 5/8" width X 36 5/8" height

30" x 36" or 36" x 30" Cube Core Eggcrate Return Air Grille Color_Aluminum + Product Details Size –+ Product Details Size 30" x 36" or 36" x 30" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 32. 5" X 38. 5". 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