16" x 34" or 34" x 16" Cube Core Eggcrate Return Air Grille Color_Black + Product Details Size -

+ Product Details Size - 32"w X 32"h is the size for the duct opening measurement only

+ Product Details Size – 25"w X 14"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 36 5/8" width X 34 5/8" height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 4" duct openings

16" x 34" or 34" x 16" Cube Core Eggcrate Return Air Grille Color_Black + Product Details Size -+ Product Details Size 16" x 34" or 34" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" X 35. 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