16" x 24" or 24" x 16" Cube Core Eggcrate Return Air Grille w25h25 + Product Details Size –

+ Product Details Size – 8"w X 36"h is the size for the duct opening measurement only

+ Product Details Size - 36"w X 28"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 18 5/8" width X 34 5/8" height

Ideal for Walls & Ceilings: Designed for seamless installation in standard 24" X 8" duct openings

actual front end outer dimensions are approximately 14 5/8" width X 16 5/8" height

16" x 24" or 24" x 16" Cube Core Eggcrate Return Air Grille w25h25 + Product Details Size –+ Product Details Size 16" x 24" or 24" x 16" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 17. 75" X 25. 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